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.
Getting Started with OBD-II
A general guide to the OBD-II protocols used for communication in automotive and industrial applications.
Basic LED Animations for Beginners (Arduino)
Let's have some fun with LEDs! We'll explore LEDs once again with the SparkFun RedBoard Qwiic, making cool effects, and putting those effects to work using a sensor.
Monitor Sensor Data from Anywhere
Using WiFi to send sensor data from an ESP32 to a WiFi network and be able to read it from an IoT Dashboard from anywhere in the world.
Hackers in Residence - Cosmic Ray Detector
Learn how to detect cosmic rays with this simple and cheap detector, built by Hacker in Residence Pete Marchetto.
LilyPad Temperature Sensor Hookup Guide
How to hook up the LilyPad Temperature Sensor as well as some project ideas and example code.
AS726X NIR/VIS Spectral Sensor Hookup Guide
It's now easier than ever to measure and characterize how different materials absorb and reflect different wavelengths of light. The AS726X spectral sensors allow you to detect wavelengths in the visible range (VIS) and near infrared range (NIR)!
Wireless Timing Project
Time for racing, let's make a wireless timing device using ESP32 wireless communication.