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!
Button and Switch Basics
A tutorial on electronics' most overlooked and underappreciated component: the switch! Here we explain the difference between momentary and maintained switches and what all those acronyms (NO, NC, SPDT, SPST, ...) stand for.
What is a Battery?
An overview of the inner workings of a battery and how it was invented.
LilyPad Basics: E-Sewing
Learn how to use conductive thread with LilyPad components.
Programming an FPGA
Come look at the basics of working with Field Programmable Gate Arrays.
APDS-9960 RGB and Gesture Sensor Hookup Guide
Getting started guide for the Avago APDS-9960 color, proximity, and gesture sensor.
Simultaneous RFID Tag Reader Hookup Guide
A basic guide to getting started with the RFID Tag Reader breakout and how to read and write multiple RFID tags over multiple feet!
Qwiic Distance Sensor (RFD77402) Hookup Guide
The RFD77402 uses an infrared VCSEL (Vertical Cavity Surface Emitting Laser) TOF (Time of Flight) module capable of millimeter precision distance readings up to 2 meters. It’s also part of SparkFun’s Qwiic system, so you won’t have to do any soldering to figure out how far away things are.
Wireless Timing Project
Time for racing, let's make a wireless timing device using ESP32 wireless communication.