Thanks to Drew for sharing this tutorial from Evil Genius Labs.
I’m preparing to exhibit at Maker Faire Kansas City 2017, and trying to come up with an interactive and educational project for people to play with.
With what I have on hand, I quickly threw together a couple of breadboards, each with a Teensy, some RGB LEDs, and three potentiometers (using Paul Stoffregen’s excellent Sturdy Potentiometer Adapter for Breadboards).
While this would work, it’s not very durable. I need something that lots of people can tinker and play with all weekend, without worrying about replacing disconnected wires.
So, I set out to design a PCB that I can assemble ahead of time, and will hopefully be durable enough to last all weekend. It will also have the bonus of being a tutorial project I can use in classes, workshops, and share online.
Featured Adafruit Product!
NeoPixel Stick – 8 x 5050 RGB LED with Integrated Drivers: Make your own little LED strip arrangement with this stick of NeoPixel LEDs. We crammed 8 of the tiny 5050 (5mm x 5mm) smart RGB LEDs onto a PCB with mounting holes and a chainable design. Use only one microcontroller pin to control as many as you can chain together! Each LED is addressable as the driver chip is inside the LED. Each one has ~18mA constant current drive so the color will be very consistent even if the voltage varies, and no external choke resistors are required making the design slim. Power the whole thing with 5VDC (4-7V works) and you’re ready to rock. Read more.