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!
Pulse Width Modulation
An introduction to the concept of Pulse Width Modulation.
Logic Levels
Learn the difference between 3.3V and 5V devices and logic levels.
Button and Switch Basics
A tutorial on electronics' most overlooked and underappreciated component: the switch! Here we explain the difference between momentary and maintained switches and what all those acronyms (NO, NC, SPDT, SPST, ...) stand for.
I2C
An introduction to I2C, one of the main embedded communications protocols in use today.
INA169 Breakout Board Hookup Guide
How to interface with the INA169 Breakout Board to measure current.
Sensor Kit Resource Hub
An overview of each component in the SparkFun Sensor Kit, plus links to tutorials and other resources you'll need to hook them up.
APDS-9301 Sensor Hookup Guide
The APDS-9301 sensor is an I2C connected luminosity sensor which returns measurements in lux.
SparkFun Temperature Sensor - STTS22H (Qwiic) Hookup Guide
Get started with the ultralow-power, high-accuracy, qwiic-enabled SparkFun Temperature Sensor - STTS22H!