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Category: Circuits

Flexible 3D Printed Battery Holder
3D Printing / CAD / Circuits / Wearables

Flexible 3D Printed Battery Holder

January 2, 2022January 2, 2022

The behind-the-neck battery holder design continues to evolve from its initial laser-cut form, to a 3D printed PLA design, to the latest, flexible filament-based version described here. This revision feels …

3D Printed Wearable Battery Holder
3D Printing / Circuits / e-Textiles / LED / Wearables

3D Printed Wearable Battery Holder

December 18, 2021January 2, 2022

After a long period without a working 3D printer I just got a Prusa MINI+, opening up a wide new range of potential projects. In particular, I finally am able …

Alligator Clip-Friendly RGB LED Case
Circuits / Kid-Friendly / Laser Cutting / LED / micro:bit

Alligator Clip-Friendly RGB LED Case

February 13, 2020

I recently wanted to do a micro:bit activity with RGB LEDs (the non-addressable kind). Because it’s a fiddly exercise to connect alligator clips to LED legs – especially with resistors …

Powered Flower: Edge-Lit Acrylic LED Flower
CAD / CircuitPython / Circuits / LED

Powered Flower: Edge-Lit Acrylic LED Flower

January 5, 2019February 14, 2019

I recently purchased a second-hand laser cutter, and have really been enjoying the speed, flexibility and precision it gives in cutting up materials for my projects. Having easy access to …

LED Matrix Handbag 2.0 – Coming Soon
Circuits / e-Textiles / LED / Wearables

LED Matrix Handbag 2.0 – Coming Soon

May 30, 2016July 1, 2021

I recently made a simpler and more attractive version of the LED Matrix Handbag to bring to the Bay Area Maker Faire.  It is far easier to sew than the original, with more …

Tweet My Purse! (LED Matrix Handbag)
Circuits / e-Textiles / LED / Teensy

Tweet My Purse! (LED Matrix Handbag)

February 15, 2016July 1, 2021

My goal with this project was to create a wearable electronics project that incorporated the electronics in an organic and subtle way.  The end result is a handbag containing a programmable 10×6 LED …

Entering the IoT with CheerLights and Adafruit Huzzah
Arduino / Circuits / Kid-Friendly

Entering the IoT with CheerLights and Adafruit Huzzah

January 4, 2016July 1, 2021

It’s hard to avoid the Internet of Things (IoT) these days.  I thought I’d join the trend by starting simply.  I was inspired by the CheerLights project, which uses a Twitter …

EtchABot: a CNC Etch A Sketch
3D Printing / Arduino / Circuits / Drawing Machines / Kid-Friendly / NodeJS / Robots

EtchABot: a CNC Etch A Sketch

November 21, 2015January 26, 2016

EtchABot turns your Etch A Sketch into a CNC (Computer Numerical Control) drawing machine.  I’m really excited about this project because of its versatility and its well balanced combination of entertaining and educational …

Making Uncanny Eyes
3D Printing / Circuits / Teensy

Making Uncanny Eyes

October 31, 2015December 1, 2015

My middle son and I have a tradition of incorporating electronics projects into our Halloween costumes. This year we saw the tutorial for Uncanny Eyes on Adafruit, written by Phillip …

YAWP – Yet Another Wall Plotter
Arduino / Circuits / Drawing Machines / Python / Raspberry Pi

YAWP – Yet Another Wall Plotter

January 7, 2015December 23, 2015

 The Inspiration: I’ve been very slow to create posts these last few months.  I like to think it’s not due to laziness, but just that I’ve been so busy playing with other projects.  I’m pushing …

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Bright Wearables Codeable LED Bags

controlled by micro:bit

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