Made in Shenzhen: Videos from my trip to China

Shenzhen is often described as the fastest city on Earth. In this first episode of Made In Shenzhen, Becky Stern and David Cranor travel from Hong Kong across the land border into Shenzhen, China, to explore Huaqiangbei, the world’s most famous electronics market and a physical interface to the global supply chain.

With the help of local fixer Aqua and PCBWay’s Elaine, Becky digs into what makes Shenzhen different from anywhere else: density, repair culture, and a manufacturing ecosystem where ideas can move from concept to reality with astonishing speed.

How does a sheet of copper-clad fiberglass become a printed circuit board? What goes into making an LED? In this episode of Made In Shenzhen, Becky goes inside a PCB factory to see the complex processes that go into making printed circuit boards, then tours a factory that makes LEDs– 20 million of them a day.

Episode 3 coming soon!

Custom Knife Storage – YT Makers Secret Santa 2025

Today, I’ll show you how I built a smart illuminated display case for showing off your finest wares. Specifically, I built this as a YouTube Makers Secret Santa gift for Nate From The Internet. I wanted this year’s gift to balance delight with practicality, so it has two parts: the LED display case with 3D printed logos, and a sturdy fabric knife roll.

The Smart Cabinet

I started with a locking steel and glass key storage cabinet, and customized it by adding NeoPixel LED strip and a 3D printed honeycomb storage wall (HCW), which is a great system of 3D printable parts that lets you swap in whatever hooks or shelves you need. I know Nate loves 3D printing, so while I printed a few generic mounts, I expect he’ll want to customize his to match the items he chooses to display. 

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Best Gift Ideas for Makers 2025

The holidays are the perfect excuse to celebrate creativity! Stock up on tools, kits, and projects that inspire more making in the new year. Whether you’re shopping for the electronics tinkerer in your life, the sewist, or a friend who would appreciate a handmade gesture, I’ve rounded up some of my favorite maker-friendly gifts for 2025.

Disclosure: Some links included in this article earn me an affiliate commission, at no extra cost to you.

Table of contents:

  • Dopp Kit Bag
  • Canvas Backpack
  • Ring Holder Necklace
  • The Inventor’s Workshop by Ruth Amos
  • A Guide to Making Friends in the Fourth Dimension by Toby Hendy
  • IoT Hug Plushies
  • 3D Printer – Prusa or Bambu
  • iFixit FixHub Portable Soldering Kit
  • Favorite DigiKey Things 2025
  • Bantam Tools NextDraw Plotter
  • Internet Security Software
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Neuroscience Made Easy with Spiker:Bit

Meet Spiker:bit, the new micro:bit-compatible accessory for building your own projects that interface directly with the electrical signals from your body. Spiker:bit provides three basic ways to measure: electromyography (EMG), electrocardiography (ECG or EKG), and electroencephalography (EEG). I’ve been a Backyard Brains fan since I met Greg Gage at Maker Faire Detroit in 2011!

To follow along, you will need:

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17 Tips for Electronics Beginners

Today, I want to share the advice I wish I could go back and give beginner-me. If you’re just getting into DIY electronics—or even if you’ve been at it a while—these tips might save you some time and energy.

Let’s start with tools. Buying fancy tools doesn’t replace practice… but sometimes, yes, the fancy version is genuinely better.

Soldering irons and wire strippers in particular—spending a bit more here can really make your experience smoother. A good quality soldering iron heats faster, holds temperature, and doesn’t make you feel like you’re fighting the tool. But the tip must be clean to work well. Even the best soldering iron won’t work well if the tip is dirty.

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LED Mushrooms

Today I’m sharing a super fun project that I collaborated on with a bartender friend of mine. He asked me to make a set of illuminated mushroom drink menus inspired by Alice in Wonderland. The idea is that he presents a mushroom, and when the recipient lifts the cap, text is revealed, letting them know which drink they are about to get. I modified Wuguigui’s free mushroom desk lamp files and added a battery-powered LED circuit to create this easy glowing 3D printing project.

Supplies:

The mushroom lamp design on Printables had to be modified because it uses an incandescent light fixture, but it’s such a lovely design that I chose to build on top of it rather than recreate something similar. The white dots are printed separately from the top dome, and the two main pieces screw together with their integrated threads. 

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Simple Backpack Sewing Pattern (with video)

Here’s how to make a super functional and stylish canvas backpack from scratch. Whether you need something for everyday carry or a weekend adventure, this bag is sturdy, customizable, and beginner-friendly.

The final bag dimensions are 34cm tall by 24 cm wide by 12cm deep (13.5 inches tall by 9.5 inches wide by 5 inches deep).

Supplies

For the Ikea-specific colorway, here are the

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Belkin Autotracking Stand Pro Teardown

Today, we’re taking a look inside the Belkin Auto-tracking Stand Pro. We’ll try it out, take it apart, and analyze the design and manufacturing of the circuitry inside.

So here’s the Belkin Auto-Tracking Stand Pro. It’s got a simple but solid design. Snap your phone into the Magsafe connector, and the stand automatically rotates to track you. It’s a cool piece of tech, and the first product to use Apple’s new DockKit accessories standard. Previously, products like this would be limited to capturing with their own apps, but now the DockKit system allows the stand to seamlessly integrate with the native camera app while capturing content or during video calls.

It has a battery inside, which makes it portable and a tripod mount on the bottom. It moves super smoothly and quietly, so I’m curious what’s going on inside.

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CGM Teardown: Dexcom G7 and FreeStyle Libre 3

Today we’re taking a look inside the two most popular continuous glucose monitors, or CGMs: The Abbott FreeStyle Libre 3 and the Dexcom 7.

Originally developed for diabetes blood sugar monitoring, CGMs are gaining wider appeal among nondiabetics looking to track their metabolic health. It feels pretty cyborg to wear a biosensor that streams data to my phone over Bluetooth.

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