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!
Serial Communication
Asynchronous serial communication concepts: packets, signal levels, baud rates, UARTs and more!
Serial Peripheral Interface (SPI)
SPI is commonly used to connect microcontrollers to peripherals such as sensors, shift registers, and SD cards.
Metric Prefixes and SI Units
This tutorial will explain how to use and convert between the standard metric prefixes.
External IO and Metastability
Why external signals can cause metastability and how to use constraint files to manage this
Logomatic Hookup Guide
Basic introduction and hook-up guide for the SparkFun Logomatic.
Si7021 Humidity and Temperature Sensor Hookup Guide
The Si7021 humidity and temperature sensor is an easy to use, digital, low-cost sensor to aid you in all your environment sensing needs.
SparkFun WiFi IR Blaster Hookup Guide
How to assemble the WiFi IR Blaster and program it using Arduino. You'll be controlling IR devices from the web in no time!
Analog MEMS Microphone (VM2020) Hookup Guide
Get started with the SparkFun analog MEMS microphone breakout board! In this tutorial, we will be connecting the differential MEMS microphone to an Arduino using the WM8960 audio codec.