LED Gumball Machine
Contributors:
Nate
Nate 
Resources and Going Further
We hope you've enjoyed reading about our LED dispensing gumball machine. If you liked this one, there's tons more!
Logic Levels
Learn the difference between 3.3V and 5V devices and logic levels.
LogicBlocks Experiment Guide
Experiments guide for the LogicBlocks kit. Build oscillators, latches, multiplexers and more with the LogicBlocks.
What is a Battery?
An overview of the inner workings of a battery and how it was invented.
External IO and Metastability
Why external signals can cause metastability and how to use constraint files to manage this
RedBoard Santa Trap
A fun holiday project to try for anyone looking to catch Santa on Christmas!
Blynk Board Project Guide
A series of Blynk projects you can set up on the Blynk Board without ever re-programming it.
Internet of Things Experiment Guide
The SparkFun ESP8266 Thing Dev Board is a powerful development platform that lets you connect your hardware projects to the Internet. In this guide, we show you how to combine some simple components to remotely log temperature data, send yourself texts and control lights from afar.
SparkFun Auto pHAT Hookup Guide
The pHAT to get your projects moving. This guide will help you get started using the Auto pHAT.