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!
Pull-up Resistors
A quick introduction to pull-up resistors - whey they're important, and how/when to use them.
Serial Peripheral Interface (SPI)
SPI is commonly used to connect microcontrollers to peripherals such as sensors, shift registers, and SD cards.
LogicBlocks & Digital Logic Introduction
Introducing fundamental digital logic concepts and LogicBlocks
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 Safety Scarf
This scarf is embedded with a ribbon of LEDs that illuminate when it gets dark out, making yourself more visible to vehicle and other pedestrians.
SparkFun Environmental Sensor Breakout - BME68x (Qwiic) Hookup Guide
A hookup guide to get started with the BME68x Environmental Sensor from Bosch. Monitor the air quality, temperature, humidity, and barometric pressure with this Qwiic sensor!
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.