LED Matrix Snowflake Sweater with Bluetooth Control
Create a tacky sweater controlled by your phone! It’s easy to put together this Bluefruit and NeoPixel matrix circuit to display snowflakes in a sweater, and control the animation and color using the Adafruit Bluefruit LE Connect app for iOS or Android.
This is an easy project to build but probably not best for a “first project” as there are a lot of concepts being mixed together and the matrix can use quite a lot of power. You can build it with any of our Bluefruit products and the microcontroller of your choice, such as FLORA with its BLE module, or the all-in-one Feather 32u4 Bluefruit LE.
Before you begin, read and understand the following prerequisite guides:
- NeoPixel Uberguide
- Adafruit Feather 32u4 Bluefruit LE or
- Getting Started with Adafruit FLORA and FLORA BLE
- Battery Powering Wearable Electronics
- Guide to Excellent Soldering
- my FLORA book
For this project you will need:
- Flexible 8×8 NeoPixel matrix
- Feather 32u4 Bluefruit LE or FLORA+BLE (or other microcontroller + Bluefruit module of your choice)
- Lipoly battery at least 1200 mAh
- JST extension cable
- Adafruit Bluefruit LE Connect app for iOS or Android
Use your soldering iron to heat up the connections on the back of your NeoPixel matrix, and remove all but one power, one ground, and the data in wire. Reposition the wires to face towards the center of the matrix instead of outwards.
If using FLORA and the FLORA BLE module, solder the collowing connections:
- matrix DIN -> FLORA D6
- matrix 5V -> FLORA VBATT
- matrix GND -> FLORA GND
- BLE 3.3V -> FLORA 3.3V
- BLE TX -> FLORA RX
- BLE RX -> FLORA TX
- BLE GND -> FLORA GND
Plug your battery into the JST port and a USB cable to the micro USB port. The USB port on your computer may not be able to supply adequate current to the matrix, so be sure your FLORA’s power switch is also set to ON to be sure the battery is supplying power.
If you’re using the Feather 32u4 Bluefruit LE, it’s even easier with only three connections:
matrix DIN -> Feather 6
matrix 5V -> Feather BAT
matrix GND -> Feather GND
These are the snowflakes we designed to go with this project– we sketched them out as bitmaps in Photoshop and then coded little snowflake functions using the GFX library for Arduino.
All the code resides in GitHub in this repository.
There are three sets of code:
- A basic test program, no Bluetooth,
- Using a Feather 32u4 Bluefruit and
- Using FLORA and the FLORA BLE module.
See the following pages for each variant. Download the code that matches your board (Feather or Flora), then open up the .ino file inside that folder with Arduino.
To test out your matrix or build this project without bluetooth control, you can use this basic “snowflakes only” sketch:
/*********************************************************************
Basic snowflake code (without Bluetooth)
Accompanies the Adafruit guide
https://learn.adafruit.com/neopixel-matrix-snowflake-sweater
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
MIT license, check LICENSE for more information
All text above, and the splash screen below must be included in
any redistribution
*********************************************************************/
#include <Adafruit_NeoPixel.h>
#include <Adafruit_GFX.h>
#include <Adafruit_NeoMatrix.h>
/*=========================================================================
APPLICATION SETTINGS
MATRIX DECLARATION Parameter 1 = width of NeoPixel matrix
Parameter 2 = height of matrix
Parameter 3 = pin number (most are valid)
Parameter 4 = matrix layout flags, add together as needed:
NEO_MATRIX_TOP,
NEO_MATRIX_BOTTOM,
NEO_MATRIX_LEFT,
NEO_MATRIX_RIGHT Position of the FIRST LED in the matrix; pick two, e.g.
NEO_MATRIX_TOP + NEO_MATRIX_LEFT for the top-left corner.
NEO_MATRIX_ROWS, NEO_MATRIX_COLUMNS: LEDs are arranged in horizontal
rows or in vertical columns, respectively; pick one or the other.
NEO_MATRIX_PROGRESSIVE,
NEO_MATRIX_ZIGZAG all rows/columns proceed in the same order,
or alternate lines reverse direction; pick one.
See example below for these values in action.
Parameter 5 = pixel type flags, add together as needed:
NEO_KHZ800 800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
NEO_KHZ400 400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
NEO_GRB Pixels are wired for GRB bitstream (most NeoPixel products)
NEO_RGB Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)
-----------------------------------------------------------------------*/
#define FACTORYRESET_ENABLE 1
#define PIN 6 // Which pin on the Arduino is connected to the NeoPixels?
// Example for NeoPixel 8x8 Matrix. In this application we'd like to use it
// with the back text positioned along the bottom edge.
// When held that way, the first pixel is at the top left, and
// lines are arranged in columns, zigzag order. The 8x8 matrix uses
// 800 KHz (v2) pixels that expect GRB color data.
Adafruit_NeoMatrix matrix = Adafruit_NeoMatrix(8, 8, PIN,
NEO_MATRIX_TOP + NEO_MATRIX_LEFT +
NEO_MATRIX_COLUMNS + NEO_MATRIX_ZIGZAG,
NEO_GRB + NEO_KHZ800);
/*=========================================================================*/
void setup(void)
{
matrix.begin();
matrix.setBrightness(40);
matrix.fillScreen(0);
matrix.show(); // This sends the updated pixel colors to the hardware.
}
void loop(void)
{
matrix.fillScreen(0);
SnowFlake1(matrix.Color(200, 200, 200));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake2(matrix.Color(255, 0, 0));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake3(matrix.Color(0, 255, 0));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake4(matrix.Color(200, 200, 200));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake5(matrix.Color(255, 0, 0));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake6(matrix.Color(0, 255, 0));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake7(matrix.Color(200, 200, 200));
matrix.show(); // This sends the updated pixel colors to the hardware.
matrix.fillScreen(0);
SnowFlake8(matrix.Color(255, 0, 0));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
}
void SnowFlake1(uint32_t c){
matrix.drawLine(0, 2, 2, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(4, 0, 6, 2, c); // x0, y0, x1, y1, color
matrix.drawLine(0, 4, 2, 6, c); // x0, y0, x1, y1, color
matrix.drawLine(4, 6, 6, 4, c); // x0, y0, x1, y1, color
matrix.drawFastVLine(3, 0, 7, c); // x0, y0, length, color
matrix.drawFastHLine(0, 3, 7, c); // x0, y0, length, color
matrix.drawPixel(3, 3, 0); // x, y, color
}
void SnowFlake2(uint32_t c){
matrix.drawFastVLine(3, 0, 7, c); // x0, y0, length, color
matrix.drawFastHLine(0, 3, 7, c); // x0, y0, length, color
matrix.drawLine(1, 1, 5, 5, c); // x0, y0, x1, y1, color
matrix.drawLine(1, 5, 5, 1, c); // x0, y0, x1, y1, color
matrix.drawPixel(3, 3, 0); // x, y, color
}
void SnowFlake3(uint32_t c){
matrix.drawLine(0, 2, 2, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(0, 4, 4, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(1, 5, 5, 1, c); // x0, y0, x1, y1, color
matrix.drawPixel(3, 3, 0); // x, y, color
matrix.drawRect(2, 2, 3, 3, c); // x0, y0, width, height
matrix.drawLine(2, 6, 6, 2, c); // x0, y0, x1, y1, color
matrix.drawLine(4, 6, 6, 4, c); // x0, y0, x1, y1, color
}
void SnowFlake4(uint32_t c){
matrix.drawRect(2, 2, 3, 3, c); // x0, y0, width, height
matrix.drawLine(0, 3, 3, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(3, 6, 6, 3, c); // x0, y0, x1, y1, color
matrix.drawLine(4, 1, 5, 2, c); // x0, y0, x1, y1, color
matrix.drawLine(1, 4, 2, 5, c); // x0, y0, x1, y1, color
matrix.drawPixel(0, 0, c); // x, y, color
matrix.drawPixel(0, 6, c); // x, y, color
matrix.drawPixel(6, 0, c); // x, y, color
matrix.drawPixel(6, 6, c); // x, y, color
}
void SnowFlake5(uint32_t c){
matrix.fillRect(1, 1, 5, 5, c); // x0, y0, width, height
matrix.drawLine(0, 3, 3, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(3, 6, 6, 3, c); // x0, y0, x1, y1, color
matrix.drawLine(1, 3, 3, 1, 0); // x0, y0, x1, y1, color
matrix.drawLine(3, 5, 5, 3, 0); // x0, y0, x1, y1, color
matrix.drawPixel(2, 4, 0); // x, y, color
matrix.drawPixel(4, 2, 0); // x, y, color
}
void SnowFlake6(uint32_t c){
matrix.fillRect(1, 1, 5, 5, c); // x0, y0, width, height
matrix.drawLine(1, 1, 5, 5, 0); // x0, y0, x1, y1, color
matrix.drawLine(1, 5, 5, 1, 0); // x0, y0, x1, y1, color
matrix.drawPixel(0, 3, c); // x, y, color
matrix.drawPixel(3, 0, c); // x, y, color
matrix.drawPixel(3, 6, c); // x, y, color
matrix.drawPixel(6, 3, c); // x, y, color
}
void SnowFlake7(uint32_t c){
matrix.drawRect(2, 2, 3, 3, c); // x0, y0, width, height
matrix.drawFastVLine(3, 0, 7, c); // x0, y0, length, color
matrix.drawFastHLine(0, 3, 7, c); // x0, y0, length, color
matrix.drawFastVLine(3, 0, 7, c); // x0, y0, length, color
matrix.drawFastHLine(0, 3, 7, c); // x0, y0, length, color
matrix.drawPixel(3, 3, 0); // x, y, color
matrix.drawFastHLine(2, 0, 3, c); // x0, y0, length, color
matrix.drawFastHLine(2, 6, 3, c); // x0, y0, length, color
matrix.drawFastVLine(0, 2, 3, c); // x0, y0, length, color
matrix.drawFastVLine(6, 2, 3, c); // x0, y0, length, color
}
void SnowFlake8(uint32_t c){
//four corners
matrix.drawPixel(0, 0, c); // x, y, color
matrix.drawPixel(0, 6, c); // x, y, color
matrix.drawPixel(6, 0, c); // x, y, color
matrix.drawPixel(6, 6, c); // x, y, color
//upper left corner
matrix.drawLine(0, 2, 2, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(0, 3, 3, 0, c); // x0, y0, x1, y1, color
//center dot
matrix.drawPixel(3, 3, c); // x, y, color
//upper right corner
matrix.drawLine(4, 0, 6, 2, c); // x0, y0, x1, y1, color
matrix.drawLine(3, 0, 6, 3, c); // x0, y0, x1, y1, color
//lower left corner
matrix.drawLine(0, 3, 3, 6, c); // x0, y0, x1, y1, color
matrix.drawLine(0, 4, 2, 6, c); // x0, y0, x1, y1, color
//lower right corner
matrix.drawLine(3, 6, 6, 3, c); // x0, y0, x1, y1, color
matrix.drawLine(4, 6, 6, 4, c); // x0, y0, x1, y1, color
}
void SnowFlake9(uint32_t c){
//four corners
matrix.drawPixel(0, 0, c); // x, y, color
matrix.drawPixel(0, 6, c); // x, y, color
matrix.drawPixel(6, 0, c); // x, y, color
matrix.drawPixel(6, 6, c); // x, y, color
//center dot
matrix.drawPixel(3, 3, c); // x, y, color
//four boxes near center
matrix.drawRect(1, 1, 2, 2, c); // x0, y0, width, height
matrix.drawRect(4, 1, 2, 2, c); // x0, y0, width, height
matrix.drawRect(1, 4, 2, 2, c); // x0, y0, width, height
matrix.drawRect(4, 4, 2, 2, c); // x0, y0, width, height
//clear out corner pixel of boxes
matrix.drawPixel(1, 1, 0); // x, y, color
matrix.drawPixel(5, 1, 0); // x, y, color
matrix.drawPixel(1, 5, 0); // x, y, color
matrix.drawPixel(5, 5, 0); // x, y, color
}
void SnowFlake10(uint32_t c){
//lines across the corners
matrix.drawLine(0, 1, 1, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(5, 0, 6, 1, c); // x0, y0, x1, y1, color
matrix.drawLine(0, 5, 1, 6, c); // x0, y0, x1, y1, color
matrix.drawLine(5, 6, 6, 5, c); // x0, y0, x1, y1, color
//center dot
matrix.drawPixel(3, 3, c); // x, y, color
//four boxes near center
matrix.drawRect(1, 1, 2, 2, c); // x0, y0, width, height
matrix.drawRect(4, 1, 2, 2, c); // x0, y0, width, height
matrix.drawRect(1, 4, 2, 2, c); // x0, y0, width, height
matrix.drawRect(4, 4, 2, 2, c); // x0, y0, width, height
//clear out corner pixel of boxes
matrix.drawPixel(1, 1, 0); // x, y, color
matrix.drawPixel(5, 1, 0); // x, y, color
matrix.drawPixel(1, 5, 0); // x, y, color
matrix.drawPixel(5, 5, 0); // x, y, color
}
void SnowFlake11(uint32_t c){
//corner lines
matrix.drawLine(0, 2, 2, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(4, 0, 6, 2, c); // x0, y0, x1, y1, color
matrix.drawLine(0, 4, 2, 6, c); // x0, y0, x1, y1, color
matrix.drawLine(4, 6, 6, 4, c); // x0, y0, x1, y1, color
//center X
matrix.drawLine(2, 2, 4, 4, c); // x0, y0, x1, y1, color
matrix.drawLine(2, 4, 4, 2, c); // x0, y0, x1, y1, color
}
//8x8
void SnowFlake12(uint32_t c){
matrix.drawLine(1, 1, 6, 6, c); // x0, y0, x1, y1, color
matrix.drawLine(1, 6, 6, 1, c); // x0, y0, x1, y1, color
matrix.fillRect(3, 0, 2, 2, c); // x0, y0, width, height
matrix.fillRect(0, 3, 2, 2, c); // x0, y0, width, height
matrix.fillRect(6, 3, 2, 2, c); // x0, y0, width, height
matrix.fillRect(3, 6, 2, 2, c); // x0, y0, width, height
matrix.show();
}
void showAllSnowflakes(uint32_t c){
SnowFlake1(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake5(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake2(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake8(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake3(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake9(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake4(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake10(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake6(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake11(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake7(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake11(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
}
For Feather Bluefruit (hardware SPI) – click Download: Project Zip in the .ino file listing below.
/*********************************************************************
This is an example for our nRF51822 based Bluefruit LE modules
Pick one up today in the adafruit shop! adafruit.com
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
MIT license, check LICENSE for more information
All text above, and the splash screen below must be included in
any redistribution
*********************************************************************/
#include <string.h>
#include <Arduino.h>
#include <SPI.h>
#if not defined (_VARIANT_ARDUINO_DUE_X_) && not defined (_VARIANT_ARDUINO_ZERO_)
#include <SoftwareSerial.h>
#endif
#include "Adafruit_BLE.h"
#include "Adafruit_BluefruitLE_SPI.h"
#include "Adafruit_BluefruitLE_UART.h"
#include "BluefruitConfig.h"
#include <Adafruit_NeoPixel.h>
#include <Adafruit_GFX.h>
#include <Adafruit_NeoMatrix.h>
/*=========================================================================
APPLICATION SETTINGS
    FACTORYRESET_ENABLE    Perform a factory reset when running this sketch
   
    Enabling this will put your Bluefruit LE module
in a 'known good' state and clear any config
data set in previous sketches or projects, so
    running this at least once is a good idea.
   
    When deploying your project, however, you will
want to disable factory reset by setting this
value to 0.  If you are making changes to your
    Bluefruit LE device via AT commands, and those
changes aren't persisting across resets, this
is the reason why.  Factory reset will erase
the non-volatile memory where config data is
stored, setting it back to factory default
values.
       
    Some sketches that require you to bond to a
central device (HID mouse, keyboard, etc.)
won't work at all with this feature enabled
since the factory reset will clear all of the
bonding data stored on the chip, meaning the
central device won't be able to reconnect.
MATRIX DECLARATION Parameter 1 = width of NeoPixel matrix
Parameter 2 = height of matrix
Parameter 3 = pin number (most are valid)
Parameter 4 = matrix layout flags, add together as needed:
NEO_MATRIX_TOP,
NEO_MATRIX_BOTTOM,
NEO_MATRIX_LEFT,
NEO_MATRIX_RIGHT Position of the FIRST LED in the matrix; pick two, e.g.
NEO_MATRIX_TOP + NEO_MATRIX_LEFT for the top-left corner.
NEO_MATRIX_ROWS, NEO_MATRIX_COLUMNS: LEDs are arranged in horizontal
rows or in vertical columns, respectively; pick one or the other.
NEO_MATRIX_PROGRESSIVE,
NEO_MATRIX_ZIGZAG all rows/columns proceed in the same order,
or alternate lines reverse direction; pick one.
See example below for these values in action.
Parameter 5 = pixel type flags, add together as needed:
NEO_KHZ800 800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
NEO_KHZ400 400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
NEO_GRB Pixels are wired for GRB bitstream (most NeoPixel products)
NEO_RGB Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)
-----------------------------------------------------------------------*/
#define FACTORYRESET_ENABLE 1
#define PIN 6 // Which pin on the Arduino is connected to the NeoPixels?
// Example for NeoPixel 8x8 Matrix. In this application we'd like to use it
// with the back text positioned along the bottom edge.
// When held that way, the first pixel is at the top left, and
// lines are arranged in columns, zigzag order. The 8x8 matrix uses
// 800 KHz (v2) pixels that expect GRB color data.
Adafruit_NeoMatrix matrix = Adafruit_NeoMatrix(8, 8, PIN,
NEO_MATRIX_TOP + NEO_MATRIX_LEFT +
NEO_MATRIX_COLUMNS + NEO_MATRIX_ZIGZAG,
NEO_GRB + NEO_KHZ800);
/*=========================================================================*/
// Create the bluefruit object, either software serial...uncomment these lines
/*
SoftwareSerial bluefruitSS = SoftwareSerial(BLUEFRUIT_SWUART_TXD_PIN, BLUEFRUIT_SWUART_RXD_PIN);
Adafruit_BluefruitLE_UART ble(bluefruitSS, BLUEFRUIT_UART_MODE_PIN,
BLUEFRUIT_UART_CTS_PIN, BLUEFRUIT_UART_RTS_PIN);
*/
/* ...or hardware serial, which does not need the RTS/CTS pins. Uncomment this line */
// Adafruit_BluefruitLE_UART ble(BLUEFRUIT_HWSERIAL_NAME, BLUEFRUIT_UART_MODE_PIN);
/* ...hardware SPI, using SCK/MOSI/MISO hardware SPI pins and then user selected CS/IRQ/RST */
Adafruit_BluefruitLE_SPI ble(BLUEFRUIT_SPI_CS, BLUEFRUIT_SPI_IRQ, BLUEFRUIT_SPI_RST);
/* ...software SPI, using SCK/MOSI/MISO user-defined SPI pins and then user selected CS/IRQ/RST */
//Adafruit_BluefruitLE_SPI ble(BLUEFRUIT_SPI_SCK, BLUEFRUIT_SPI_MISO,
// BLUEFRUIT_SPI_MOSI, BLUEFRUIT_SPI_CS,
// BLUEFRUIT_SPI_IRQ, BLUEFRUIT_SPI_RST);
// A small helper
void error(const __FlashStringHelper*err) {
Serial.println(err);
while (1);
}
// function prototypes over in packetparser.cpp
uint8_t readPacket(Adafruit_BLE *ble, uint16_t timeout);
float parsefloat(uint8_t *buffer);
void printHex(const uint8_t * data, const uint32_t numBytes);
// the packet buffer
extern uint8_t packetbuffer[];
/**************************************************************************/
/*!
@brief Sets up the HW an the BLE module (this function is called
automatically on startup)
*/
/**************************************************************************/
//additional variables
//Color
uint8_t red = 100;
uint8_t green = 100;
uint8_t blue = 100;
uint8_t animationState = 1;
void setup(void)
{
//while (!Serial); // required for Flora & Micro
delay(500);
matrix.begin();
matrix.setBrightness(40);
matrix.fillScreen(0);
showAllSnowflakes(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
Serial.begin(115200);
Serial.println(F("Adafruit Bluefruit NeoMatrix Snowflake"));
Serial.println(F("------------------------------------------------"));
/* Initialise the module */
Serial.print(F("Initialising the Bluefruit LE module: "));
if ( !ble.begin(VERBOSE_MODE) )
{
error(F("Couldn't find Bluefruit, make sure it's in CoMmanD mode & check wiring?"));
}
Serial.println( F("OK!") );
if ( FACTORYRESET_ENABLE )
{
/* Perform a factory reset to make sure everything is in a known state */
Serial.println(F("Performing a factory reset: "));
if ( ! ble.factoryReset() ){
error(F("Couldn't factory reset"));
}
}
/* Disable command echo from Bluefruit */
ble.echo(false);
Serial.println("Requesting Bluefruit info:");
/* Print Bluefruit information */
ble.info();
Serial.println(F("Please use Adafruit Bluefruit LE app to connect in Controller mode"));
Serial.println(F("Then activate/use the color picker and controller!"));
Serial.println();
ble.verbose(false); // debug info is a little annoying after this point!
/* Wait for connection */
while (! ble.isConnected()) {
delay(500);
}
Serial.println(F("***********************"));
// Set Bluefruit to DATA mode
Serial.println( F("Switching to DATA mode!") );
ble.setMode(BLUEFRUIT_MODE_DATA);
Serial.println(F("***********************"));
}
/**************************************************************************/
/*!
@brief Constantly poll for new command or response data
*/
/**************************************************************************/
void loop(void)
{
/* Wait for new data to arrive */
uint8_t len = readPacket(&ble, BLE_READPACKET_TIMEOUT);
//if (len == 0) return;
/* Got a packet! */
// printHex(packetbuffer, len);
// Color
if (packetbuffer[1] == 'C') {
red = packetbuffer[2];
green = packetbuffer[3];
blue = packetbuffer[4];
Serial.print ("RGB #");
if (red < 0x10) Serial.print("0");
Serial.print(red, HEX);
if (green < 0x10) Serial.print("0");
Serial.print(green, HEX);
if (blue < 0x10) Serial.print("0");
Serial.println(blue, HEX);
}
// Buttons
if (packetbuffer[1] == 'B') {
uint8_t buttnum = packetbuffer[2] - '0';
boolean pressed = packetbuffer[3] - '0';
Serial.print ("Button "); Serial.print(buttnum);
animationState = buttnum;
if (pressed) {
Serial.println(" pressed");
} else {
Serial.println(" released");
}
}
if (animationState == 1){ // animate through all the snowflakes
matrix.fillScreen(0);
showAllSnowflakes(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
}
if (animationState == 2){
matrix.fillScreen(0);
SnowFlake2(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
}
if (animationState == 3){
matrix.fillScreen(0);
SnowFlake3(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
}
if (animationState == 4){
matrix.fillScreen(0);
SnowFlake4(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
}
if (animationState == 5){
matrix.fillScreen(0);
SnowFlake5(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
}
if (animationState == 6){
matrix.fillScreen(0);
SnowFlake6(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
}
if (animationState == 7){
matrix.fillScreen(0);
SnowFlake7(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
}
if (animationState == 8){
matrix.fillScreen(0);
SnowFlake8(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
}
}
void SnowFlake1(uint32_t c){
matrix.drawLine(0, 2, 2, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(4, 0, 6, 2, c); // x0, y0, x1, y1, color
matrix.drawLine(0, 4, 2, 6, c); // x0, y0, x1, y1, color
matrix.drawLine(4, 6, 6, 4, c); // x0, y0, x1, y1, color
matrix.drawFastVLine(3, 0, 7, c); // x0, y0, length, color
matrix.drawFastHLine(0, 3, 7, c); // x0, y0, length, color
matrix.drawPixel(3, 3, 0); // x, y, color
}
void SnowFlake2(uint32_t c){
matrix.drawFastVLine(3, 0, 7, c); // x0, y0, length, color
matrix.drawFastHLine(0, 3, 7, c); // x0, y0, length, color
matrix.drawLine(1, 1, 5, 5, c); // x0, y0, x1, y1, color
matrix.drawLine(1, 5, 5, 1, c); // x0, y0, x1, y1, color
matrix.drawPixel(3, 3, 0); // x, y, color
}
void SnowFlake3(uint32_t c){
matrix.drawLine(0, 2, 2, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(0, 4, 4, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(1, 5, 5, 1, c); // x0, y0, x1, y1, color
matrix.drawPixel(3, 3, 0); // x, y, color
matrix.drawRect(2, 2, 3, 3, c); // x0, y0, width, height
matrix.drawLine(2, 6, 6, 2, c); // x0, y0, x1, y1, color
matrix.drawLine(4, 6, 6, 4, c); // x0, y0, x1, y1, color
}
void SnowFlake4(uint32_t c){
matrix.drawRect(2, 2, 3, 3, c); // x0, y0, width, height
matrix.drawLine(0, 3, 3, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(3, 6, 6, 3, c); // x0, y0, x1, y1, color
matrix.drawLine(4, 1, 5, 2, c); // x0, y0, x1, y1, color
matrix.drawLine(1, 4, 2, 5, c); // x0, y0, x1, y1, color
matrix.drawPixel(0, 0, c); // x, y, color
matrix.drawPixel(0, 6, c); // x, y, color
matrix.drawPixel(6, 0, c); // x, y, color
matrix.drawPixel(6, 6, c); // x, y, color
}
void SnowFlake5(uint32_t c){
matrix.fillRect(1, 1, 5, 5, c); // x0, y0, width, height
matrix.drawLine(0, 3, 3, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(3, 6, 6, 3, c); // x0, y0, x1, y1, color
matrix.drawLine(1, 3, 3, 1, 0); // x0, y0, x1, y1, color
matrix.drawLine(3, 5, 5, 3, 0); // x0, y0, x1, y1, color
matrix.drawPixel(2, 4, 0); // x, y, color
matrix.drawPixel(4, 2, 0); // x, y, color
}
void SnowFlake6(uint32_t c){
matrix.fillRect(1, 1, 5, 5, c); // x0, y0, width, height
matrix.drawLine(1, 1, 5, 5, 0); // x0, y0, x1, y1, color
matrix.drawLine(1, 5, 5, 1, 0); // x0, y0, x1, y1, color
matrix.drawPixel(0, 3, c); // x, y, color
matrix.drawPixel(3, 0, c); // x, y, color
matrix.drawPixel(3, 6, c); // x, y, color
matrix.drawPixel(6, 3, c); // x, y, color
}
void SnowFlake7(uint32_t c){
matrix.drawRect(2, 2, 3, 3, c); // x0, y0, width, height
matrix.drawFastVLine(3, 0, 7, c); // x0, y0, length, color
matrix.drawFastHLine(0, 3, 7, c); // x0, y0, length, color
matrix.drawFastVLine(3, 0, 7, c); // x0, y0, length, color
matrix.drawFastHLine(0, 3, 7, c); // x0, y0, length, color
matrix.drawPixel(3, 3, 0); // x, y, color
matrix.drawFastHLine(2, 0, 3, c); // x0, y0, length, color
matrix.drawFastHLine(2, 6, 3, c); // x0, y0, length, color
matrix.drawFastVLine(0, 2, 3, c); // x0, y0, length, color
matrix.drawFastVLine(6, 2, 3, c); // x0, y0, length, color
}
void SnowFlake8(uint32_t c){
//four corners
matrix.drawPixel(0, 0, c); // x, y, color
matrix.drawPixel(0, 6, c); // x, y, color
matrix.drawPixel(6, 0, c); // x, y, color
matrix.drawPixel(6, 6, c); // x, y, color
//upper left corner
matrix.drawLine(0, 2, 2, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(0, 3, 3, 0, c); // x0, y0, x1, y1, color
//center dot
matrix.drawPixel(3, 3, c); // x, y, color
//upper right corner
matrix.drawLine(4, 0, 6, 2, c); // x0, y0, x1, y1, color
matrix.drawLine(3, 0, 6, 3, c); // x0, y0, x1, y1, color
//lower left corner
matrix.drawLine(0, 3, 3, 6, c); // x0, y0, x1, y1, color
matrix.drawLine(0, 4, 2, 6, c); // x0, y0, x1, y1, color
//lower right corner
matrix.drawLine(3, 6, 6, 3, c); // x0, y0, x1, y1, color
matrix.drawLine(4, 6, 6, 4, c); // x0, y0, x1, y1, color
}
void SnowFlake9(uint32_t c){
//four corners
matrix.drawPixel(0, 0, c); // x, y, color
matrix.drawPixel(0, 6, c); // x, y, color
matrix.drawPixel(6, 0, c); // x, y, color
matrix.drawPixel(6, 6, c); // x, y, color
//center dot
matrix.drawPixel(3, 3, c); // x, y, color
//four boxes near center
matrix.drawRect(1, 1, 2, 2, c); // x0, y0, width, height
matrix.drawRect(4, 1, 2, 2, c); // x0, y0, width, height
matrix.drawRect(1, 4, 2, 2, c); // x0, y0, width, height
matrix.drawRect(4, 4, 2, 2, c); // x0, y0, width, height
//clear out corner pixel of boxes
matrix.drawPixel(1, 1, 0); // x, y, color
matrix.drawPixel(5, 1, 0); // x, y, color
matrix.drawPixel(1, 5, 0); // x, y, color
matrix.drawPixel(5, 5, 0); // x, y, color
}
void SnowFlake10(uint32_t c){
//lines across the corners
matrix.drawLine(0, 1, 1, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(5, 0, 6, 1, c); // x0, y0, x1, y1, color
matrix.drawLine(0, 5, 1, 6, c); // x0, y0, x1, y1, color
matrix.drawLine(5, 6, 6, 5, c); // x0, y0, x1, y1, color
//center dot
matrix.drawPixel(3, 3, c); // x, y, color
//four boxes near center
matrix.drawRect(1, 1, 2, 2, c); // x0, y0, width, height
matrix.drawRect(4, 1, 2, 2, c); // x0, y0, width, height
matrix.drawRect(1, 4, 2, 2, c); // x0, y0, width, height
matrix.drawRect(4, 4, 2, 2, c); // x0, y0, width, height
//clear out corner pixel of boxes
matrix.drawPixel(1, 1, 0); // x, y, color
matrix.drawPixel(5, 1, 0); // x, y, color
matrix.drawPixel(1, 5, 0); // x, y, color
matrix.drawPixel(5, 5, 0); // x, y, color
}
void SnowFlake11(uint32_t c){
//corner lines
matrix.drawLine(0, 2, 2, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(4, 0, 6, 2, c); // x0, y0, x1, y1, color
matrix.drawLine(0, 4, 2, 6, c); // x0, y0, x1, y1, color
matrix.drawLine(4, 6, 6, 4, c); // x0, y0, x1, y1, color
//center X
matrix.drawLine(2, 2, 4, 4, c); // x0, y0, x1, y1, color
matrix.drawLine(2, 4, 4, 2, c); // x0, y0, x1, y1, color
}
//8x8
void SnowFlake12(uint32_t c){
matrix.drawLine(1, 1, 6, 6, c); // x0, y0, x1, y1, color
matrix.drawLine(1, 6, 6, 1, c); // x0, y0, x1, y1, color
matrix.fillRect(3, 0, 2, 2, c); // x0, y0, width, height
matrix.fillRect(0, 3, 2, 2, c); // x0, y0, width, height
matrix.fillRect(6, 3, 2, 2, c); // x0, y0, width, height
matrix.fillRect(3, 6, 2, 2, c); // x0, y0, width, height
matrix.show();
}
void showAllSnowflakes(uint32_t c){
SnowFlake1(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake5(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake2(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake8(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake3(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake9(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake4(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake10(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake6(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake11(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake7(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake11(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
}
For using FLORA, this code has been formatted to work with the FLORA BLE module over hardware serial.
/*********************************************************************
This is an example for our nRF51822 based Bluefruit LE modules
Pick one up today in the adafruit shop!
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
MIT license, check LICENSE for more information
All text above, and the splash screen below must be included in
any redistribution
*********************************************************************/
#include <string.h>
#include <Arduino.h>
#include <SPI.h>
#if not defined (_VARIANT_ARDUINO_DUE_X_) && not defined (_VARIANT_ARDUINO_ZERO_)
#include <SoftwareSerial.h>
#endif
#include "Adafruit_BLE.h"
#include "Adafruit_BluefruitLE_SPI.h"
#include "Adafruit_BluefruitLE_UART.h"
#include "BluefruitConfig.h"
#include <Adafruit_NeoPixel.h>
#include <Adafruit_GFX.h>
#include <Adafruit_NeoMatrix.h>
/*=========================================================================
APPLICATION SETTINGS
    FACTORYRESET_ENABLE    Perform a factory reset when running this sketch
   
    Enabling this will put your Bluefruit LE module
in a 'known good' state and clear any config
data set in previous sketches or projects, so
    running this at least once is a good idea.
   
    When deploying your project, however, you will
want to disable factory reset by setting this
value to 0.  If you are making changes to your
    Bluefruit LE device via AT commands, and those
changes aren't persisting across resets, this
is the reason why.  Factory reset will erase
the non-volatile memory where config data is
stored, setting it back to factory default
values.
       
    Some sketches that require you to bond to a
central device (HID mouse, keyboard, etc.)
won't work at all with this feature enabled
since the factory reset will clear all of the
bonding data stored on the chip, meaning the
central device won't be able to reconnect.
MATRIX DECLARATION Parameter 1 = width of NeoPixel matrix
Parameter 2 = height of matrix
Parameter 3 = pin number (most are valid)
Parameter 4 = matrix layout flags, add together as needed:
NEO_MATRIX_TOP,
NEO_MATRIX_BOTTOM,
NEO_MATRIX_LEFT,
NEO_MATRIX_RIGHT Position of the FIRST LED in the matrix; pick two, e.g.
NEO_MATRIX_TOP + NEO_MATRIX_LEFT for the top-left corner.
NEO_MATRIX_ROWS, NEO_MATRIX_COLUMNS: LEDs are arranged in horizontal
rows or in vertical columns, respectively; pick one or the other.
NEO_MATRIX_PROGRESSIVE,
NEO_MATRIX_ZIGZAG all rows/columns proceed in the same order,
or alternate lines reverse direction; pick one.
See example below for these values in action.
Parameter 5 = pixel type flags, add together as needed:
NEO_KHZ800 800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
NEO_KHZ400 400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
NEO_GRB Pixels are wired for GRB bitstream (most NeoPixel products)
NEO_RGB Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)
-----------------------------------------------------------------------*/
#define FACTORYRESET_ENABLE 1
#define PIN 6 // Which pin on the Arduino is connected to the NeoPixels?
// Example for NeoPixel 8x8 Matrix. In this application we'd like to use it
// with the back text positioned along the bottom edge.
// When held that way, the first pixel is at the top left, and
// lines are arranged in columns, zigzag order. The 8x8 matrix uses
// 800 KHz (v2) pixels that expect GRB color data.
Adafruit_NeoMatrix matrix = Adafruit_NeoMatrix(8, 8, PIN,
NEO_MATRIX_TOP + NEO_MATRIX_LEFT +
NEO_MATRIX_COLUMNS + NEO_MATRIX_ZIGZAG,
NEO_GRB + NEO_KHZ800);
/*=========================================================================*/
// Create the bluefruit object, either software serial...uncomment these lines
/*
SoftwareSerial bluefruitSS = SoftwareSerial(BLUEFRUIT_SWUART_TXD_PIN, BLUEFRUIT_SWUART_RXD_PIN);
Adafruit_BluefruitLE_UART ble(bluefruitSS, BLUEFRUIT_UART_MODE_PIN,
BLUEFRUIT_UART_CTS_PIN, BLUEFRUIT_UART_RTS_PIN);
*/
/* ...or hardware serial, which does not need the RTS/CTS pins. Uncomment this line */
Adafruit_BluefruitLE_UART ble(BLUEFRUIT_HWSERIAL_NAME, BLUEFRUIT_UART_MODE_PIN);
/* ...hardware SPI, using SCK/MOSI/MISO hardware SPI pins and then user selected CS/IRQ/RST */
//Adafruit_BluefruitLE_SPI ble(BLUEFRUIT_SPI_CS, BLUEFRUIT_SPI_IRQ, BLUEFRUIT_SPI_RST);
/* ...software SPI, using SCK/MOSI/MISO user-defined SPI pins and then user selected CS/IRQ/RST */
//Adafruit_BluefruitLE_SPI ble(BLUEFRUIT_SPI_SCK, BLUEFRUIT_SPI_MISO,
// BLUEFRUIT_SPI_MOSI, BLUEFRUIT_SPI_CS,
// BLUEFRUIT_SPI_IRQ, BLUEFRUIT_SPI_RST);
// A small helper
void error(const __FlashStringHelper*err) {
Serial.println(err);
while (1);
}
// function prototypes over in packetparser.cpp
uint8_t readPacket(Adafruit_BLE *ble, uint16_t timeout);
float parsefloat(uint8_t *buffer);
void printHex(const uint8_t * data, const uint32_t numBytes);
// the packet buffer
extern uint8_t packetbuffer[];
/**************************************************************************/
/*!
@brief Sets up the HW an the BLE module (this function is called
automatically on startup)
*/
/**************************************************************************/
//additional variables
//Color
uint8_t red = 100;
uint8_t green = 100;
uint8_t blue = 100;
uint8_t animationState = 1;
void setup(void)
{
//while (!Serial); // required for Flora & Micro
delay(500);
matrix.begin();
matrix.setBrightness(40);
matrix.fillScreen(0);
showAllSnowflakes(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
Serial.begin(115200);
Serial.println(F("Adafruit Bluefruit NeoMatrix Snowflake"));
Serial.println(F("------------------------------------------------"));
/* Initialise the module */
Serial.print(F("Initialising the Bluefruit LE module: "));
if ( !ble.begin(VERBOSE_MODE) )
{
error(F("Couldn't find Bluefruit, make sure it's in CoMmanD mode & check wiring?"));
}
Serial.println( F("OK!") );
if ( FACTORYRESET_ENABLE )
{
/* Perform a factory reset to make sure everything is in a known state */
Serial.println(F("Performing a factory reset: "));
if ( ! ble.factoryReset() ){
error(F("Couldn't factory reset"));
}
}
/* Disable command echo from Bluefruit */
ble.echo(false);
Serial.println("Requesting Bluefruit info:");
/* Print Bluefruit information */
ble.info();
Serial.println(F("Please use Adafruit Bluefruit LE app to connect in Controller mode"));
Serial.println(F("Then activate/use the color picker and controller!"));
Serial.println();
ble.verbose(false); // debug info is a little annoying after this point!
/* Wait for connection */
while (! ble.isConnected()) {
delay(500);
}
Serial.println(F("***********************"));
// Set Bluefruit to DATA mode
Serial.println( F("Switching to DATA mode!") );
ble.setMode(BLUEFRUIT_MODE_DATA);
Serial.println(F("***********************"));
}
/**************************************************************************/
/*!
@brief Constantly poll for new command or response data
*/
/**************************************************************************/
void loop(void)
{
/* Wait for new data to arrive */
uint8_t len = readPacket(&ble, BLE_READPACKET_TIMEOUT);
//if (len == 0) return;
/* Got a packet! */
// printHex(packetbuffer, len);
// Color
if (packetbuffer[1] == 'C') {
red = packetbuffer[2];
green = packetbuffer[3];
blue = packetbuffer[4];
Serial.print ("RGB #");
if (red < 0x10) Serial.print("0");
Serial.print(red, HEX);
if (green < 0x10) Serial.print("0");
Serial.print(green, HEX);
if (blue < 0x10) Serial.print("0");
Serial.println(blue, HEX);
}
// Buttons
if (packetbuffer[1] == 'B') {
uint8_t buttnum = packetbuffer[2] - '0';
boolean pressed = packetbuffer[3] - '0';
Serial.print ("Button "); Serial.print(buttnum);
animationState = buttnum;
if (pressed) {
Serial.println(" pressed");
} else {
Serial.println(" released");
}
}
if (animationState == 1){ // animate through all the snowflakes
matrix.fillScreen(0);
SnowFlake1(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
}
if (animationState == 2){
matrix.fillScreen(0);
SnowFlake2(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
}
if (animationState == 3){
matrix.fillScreen(0);
SnowFlake3(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
}
if (animationState == 4){
matrix.fillScreen(0);
SnowFlake4(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
}
if (animationState == 5){
matrix.fillScreen(0);
SnowFlake5(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
}
if (animationState == 6){
matrix.fillScreen(0);
SnowFlake6(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
}
if (animationState == 7){
matrix.fillScreen(0);
SnowFlake7(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
}
if (animationState == 8){
matrix.fillScreen(0);
SnowFlake8(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
}
}
void SnowFlake1(uint32_t c){
matrix.drawLine(0, 2, 2, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(4, 0, 6, 2, c); // x0, y0, x1, y1, color
matrix.drawLine(0, 4, 2, 6, c); // x0, y0, x1, y1, color
matrix.drawLine(4, 6, 6, 4, c); // x0, y0, x1, y1, color
matrix.drawFastVLine(3, 0, 7, c); // x0, y0, length, color
matrix.drawFastHLine(0, 3, 7, c); // x0, y0, length, color
matrix.drawPixel(3, 3, 0); // x, y, color
}
void SnowFlake2(uint32_t c){
matrix.drawFastVLine(3, 0, 7, c); // x0, y0, length, color
matrix.drawFastHLine(0, 3, 7, c); // x0, y0, length, color
matrix.drawLine(1, 1, 5, 5, c); // x0, y0, x1, y1, color
matrix.drawLine(1, 5, 5, 1, c); // x0, y0, x1, y1, color
matrix.drawPixel(3, 3, 0); // x, y, color
}
void SnowFlake3(uint32_t c){
matrix.drawLine(0, 2, 2, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(0, 4, 4, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(1, 5, 5, 1, c); // x0, y0, x1, y1, color
matrix.drawPixel(3, 3, 0); // x, y, color
matrix.drawRect(2, 2, 3, 3, c); // x0, y0, width, height
matrix.drawLine(2, 6, 6, 2, c); // x0, y0, x1, y1, color
matrix.drawLine(4, 6, 6, 4, c); // x0, y0, x1, y1, color
}
void SnowFlake4(uint32_t c){
matrix.drawRect(2, 2, 3, 3, c); // x0, y0, width, height
matrix.drawLine(0, 3, 3, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(3, 6, 6, 3, c); // x0, y0, x1, y1, color
matrix.drawLine(4, 1, 5, 2, c); // x0, y0, x1, y1, color
matrix.drawLine(1, 4, 2, 5, c); // x0, y0, x1, y1, color
matrix.drawPixel(0, 0, c); // x, y, color
matrix.drawPixel(0, 6, c); // x, y, color
matrix.drawPixel(6, 0, c); // x, y, color
matrix.drawPixel(6, 6, c); // x, y, color
}
void SnowFlake5(uint32_t c){
matrix.fillRect(1, 1, 5, 5, c); // x0, y0, width, height
matrix.drawLine(0, 3, 3, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(3, 6, 6, 3, c); // x0, y0, x1, y1, color
matrix.drawLine(1, 3, 3, 1, 0); // x0, y0, x1, y1, color
matrix.drawLine(3, 5, 5, 3, 0); // x0, y0, x1, y1, color
matrix.drawPixel(2, 4, 0); // x, y, color
matrix.drawPixel(4, 2, 0); // x, y, color
}
void SnowFlake6(uint32_t c){
matrix.fillRect(1, 1, 5, 5, c); // x0, y0, width, height
matrix.drawLine(1, 1, 5, 5, 0); // x0, y0, x1, y1, color
matrix.drawLine(1, 5, 5, 1, 0); // x0, y0, x1, y1, color
matrix.drawPixel(0, 3, c); // x, y, color
matrix.drawPixel(3, 0, c); // x, y, color
matrix.drawPixel(3, 6, c); // x, y, color
matrix.drawPixel(6, 3, c); // x, y, color
}
void SnowFlake7(uint32_t c){
matrix.drawRect(2, 2, 3, 3, c); // x0, y0, width, height
matrix.drawFastVLine(3, 0, 7, c); // x0, y0, length, color
matrix.drawFastHLine(0, 3, 7, c); // x0, y0, length, color
matrix.drawFastVLine(3, 0, 7, c); // x0, y0, length, color
matrix.drawFastHLine(0, 3, 7, c); // x0, y0, length, color
matrix.drawPixel(3, 3, 0); // x, y, color
matrix.drawFastHLine(2, 0, 3, c); // x0, y0, length, color
matrix.drawFastHLine(2, 6, 3, c); // x0, y0, length, color
matrix.drawFastVLine(0, 2, 3, c); // x0, y0, length, color
matrix.drawFastVLine(6, 2, 3, c); // x0, y0, length, color
}
void SnowFlake8(uint32_t c){
//four corners
matrix.drawPixel(0, 0, c); // x, y, color
matrix.drawPixel(0, 6, c); // x, y, color
matrix.drawPixel(6, 0, c); // x, y, color
matrix.drawPixel(6, 6, c); // x, y, color
//upper left corner
matrix.drawLine(0, 2, 2, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(0, 3, 3, 0, c); // x0, y0, x1, y1, color
//center dot
matrix.drawPixel(3, 3, c); // x, y, color
//upper right corner
matrix.drawLine(4, 0, 6, 2, c); // x0, y0, x1, y1, color
matrix.drawLine(3, 0, 6, 3, c); // x0, y0, x1, y1, color
//lower left corner
matrix.drawLine(0, 3, 3, 6, c); // x0, y0, x1, y1, color
matrix.drawLine(0, 4, 2, 6, c); // x0, y0, x1, y1, color
//lower right corner
matrix.drawLine(3, 6, 6, 3, c); // x0, y0, x1, y1, color
matrix.drawLine(4, 6, 6, 4, c); // x0, y0, x1, y1, color
}
void SnowFlake9(uint32_t c){
//four corners
matrix.drawPixel(0, 0, c); // x, y, color
matrix.drawPixel(0, 6, c); // x, y, color
matrix.drawPixel(6, 0, c); // x, y, color
matrix.drawPixel(6, 6, c); // x, y, color
//center dot
matrix.drawPixel(3, 3, c); // x, y, color
//four boxes near center
matrix.drawRect(1, 1, 2, 2, c); // x0, y0, width, height
matrix.drawRect(4, 1, 2, 2, c); // x0, y0, width, height
matrix.drawRect(1, 4, 2, 2, c); // x0, y0, width, height
matrix.drawRect(4, 4, 2, 2, c); // x0, y0, width, height
//clear out corner pixel of boxes
matrix.drawPixel(1, 1, 0); // x, y, color
matrix.drawPixel(5, 1, 0); // x, y, color
matrix.drawPixel(1, 5, 0); // x, y, color
matrix.drawPixel(5, 5, 0); // x, y, color
}
void SnowFlake10(uint32_t c){
//lines across the corners
matrix.drawLine(0, 1, 1, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(5, 0, 6, 1, c); // x0, y0, x1, y1, color
matrix.drawLine(0, 5, 1, 6, c); // x0, y0, x1, y1, color
matrix.drawLine(5, 6, 6, 5, c); // x0, y0, x1, y1, color
//center dot
matrix.drawPixel(3, 3, c); // x, y, color
//four boxes near center
matrix.drawRect(1, 1, 2, 2, c); // x0, y0, width, height
matrix.drawRect(4, 1, 2, 2, c); // x0, y0, width, height
matrix.drawRect(1, 4, 2, 2, c); // x0, y0, width, height
matrix.drawRect(4, 4, 2, 2, c); // x0, y0, width, height
//clear out corner pixel of boxes
matrix.drawPixel(1, 1, 0); // x, y, color
matrix.drawPixel(5, 1, 0); // x, y, color
matrix.drawPixel(1, 5, 0); // x, y, color
matrix.drawPixel(5, 5, 0); // x, y, color
}
void SnowFlake11(uint32_t c){
//corner lines
matrix.drawLine(0, 2, 2, 0, c); // x0, y0, x1, y1, color
matrix.drawLine(4, 0, 6, 2, c); // x0, y0, x1, y1, color
matrix.drawLine(0, 4, 2, 6, c); // x0, y0, x1, y1, color
matrix.drawLine(4, 6, 6, 4, c); // x0, y0, x1, y1, color
//center X
matrix.drawLine(2, 2, 4, 4, c); // x0, y0, x1, y1, color
matrix.drawLine(2, 4, 4, 2, c); // x0, y0, x1, y1, color
}
//8x8
void SnowFlake12(uint32_t c){
matrix.drawLine(1, 1, 6, 6, c); // x0, y0, x1, y1, color
matrix.drawLine(1, 6, 6, 1, c); // x0, y0, x1, y1, color
matrix.fillRect(3, 0, 2, 2, c); // x0, y0, width, height
matrix.fillRect(0, 3, 2, 2, c); // x0, y0, width, height
matrix.fillRect(6, 3, 2, 2, c); // x0, y0, width, height
matrix.fillRect(3, 6, 2, 2, c); // x0, y0, width, height
matrix.show();
}
void showAllSnowflakes(uint32_t c){
SnowFlake1(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake5(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake2(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake8(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake3(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake9(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake4(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake10(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake6(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake11(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake7(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
matrix.fillScreen(0);
SnowFlake11(matrix.Color(red, green, blue));
matrix.show(); // This sends the updated pixel colors to the hardware.
delay(500);
}
To temporarily attach the matrix to your sweater, use a needle and thread to tack down the corners of the matrix. Plug your battery in through a JST extension cable so you can tuck the battery into your pocket. Wear over another shirt so the circuit is not shorted by your skin!
