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!
Voltage Dividers
Turn a large voltage into a smaller one with voltage dividers. This tutorial covers: what a voltage divider circuit looks like and how it is used in the real world.
I2C
An introduction to I2C, one of the main embedded communications protocols in use today.
Raspberry Pi SPI and I2C Tutorial
Learn how to use serial I2C and SPI buses on your Raspberry Pi using the wiringPi I/O library for C/C++ and spidev/smbus for Python.
External IO and Metastability
Why external signals can cause metastability and how to use constraint files to manage this
OpenLog Hookup Guide
An introduction to working with the OpenLog data logger.
LIS3DH Hookup Guide
A guide to connecting the LIS3DH to a microcontroller and using the Arduino library.
Qwiic GRID-Eye Infrared Array (AMG88xx) Hookup Guide
The Panasonic GRID-Eye (AMG88xx) 8x8 thermopile array serves as a functional low-resolution infrared camera. This means you have a square array of 64 pixels each capable of independent temperature detection. It’s like having thermal camera (or Predator’s vision), just in really low resolution.
SparkFun Air Quality Sensor - SGP30 (Qwiic) Hookup Guide
A hookup guide to get started with the SparkFun Air Quality Sensor - SGP30 (Qwiic).