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.
ASCII
A brief history of how ASCII came to be, how it's useful to computers, and some helpful tables to convert numbers to characters.
LilyPad Basics: E-Sewing
Learn how to use conductive thread with LilyPad components.
Configuring the PATH System Variable
A simple guide for configuring the PATH variable on Win 10, Mac OSX, and Linux systems.
MAX30105 Particle and Pulse Ox Sensor Hookup Guide
The SparkFun MAX30105 Particle Sensor is a flexible and powerful sensor enabling sensing of distance, heart rate, particle detection, even the blinking of an eye. Get ready. Set. Shine!
Qwiic Magnetometer (MLX90393) Hookup Guide
Figure out how magnetic fields are oriented, all without having to solder a thing.
SparkFun PIR Breakout Hookup Guide
Get started with these Panasonic EKM-Series PIR breakouts following this Hookup Guide.
Calibrating Your Odometry Sensor
In this tutorial, we will cover how to calibrate your Qwiic Optical Tracking Odometry Sensor (or "OTOS") with Arduino and Python Examples.