IoT Muscle Sensing ‘Sup Brows with Kate Hartman
We spend a lot of time trying to send messages to each other through talking, texting, emailing, and more. What if you could send a message to your friend by simply raising your eyebrows?
This project is a collaboration with Kate Hartman.
In this wearable electronics project, we’ll learn to make muscles send text messages! This learning guide will show you how to use a MyoWare muscle sensor and a Bluefruit Feather microcontroller to transmit a signal through the phone to Adafruit IO and If This Then That to trigger an SMS. Let’s get started!

For this project you will need:
- MyoWare Muscle Sensor
- EMG Electrodes
- Adafruit Feather 32u4 Bluefruit LE
- Lithium Ion Polymer Battery 3.7v (we used 500 mAh)
- Silicone Cover wire
- USB micro cable
Before you begin, please review and understand the following prerequisite guides:
- Getting Started with the MyoWare Muscle Sensor
- Adafruit Feather 32u4 Bluefruit LE
- Adafruit IO
- MQTT, Adafruit.IO & you!
- Adafruit guide to excellent soldering







