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!
Getting Started with OBD-II
A general guide to the OBD-II protocols used for communication in automotive and industrial applications.
What is a Battery?
An overview of the inner workings of a battery and how it was invented.
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.
VL6180 Hookup Guide
Get started with your VL6180 based sensor or the VL6180 breakout board.
Bark Back Interactive Pet Monitor
Monitor and interact with pets through this dog bark detector project based on the Raspberry Pi!
Air Quality Sensor - SGP40 (Qwiic) Hookup Guide
Get started measuring indoor air quality with the SparkFun Air Quality Sensor - SGP40 (Qwiic) Hookup Guide.
SparkFun Indoor Air Quality Sensor - ENS160 (Qwiic) Hookup Guide
Is your air safe? Check your eCO2, TVOC, and AQI levels with the new SparkFun Indoor Air Quality Sensor - ENS160!