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, Current, Resistance, and Ohm's Law
Learn about Ohm's Law, one of the most fundamental equations in all electrical engineering.
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.
Polarity
An introduction to polarity in electronic components. Discover what polarity is, which parts have it, and how to identify it.
Lessons in Algorithms
Learn techniques on how to use Finite Impulse Response (FIR) filters and other data-processing tools to turn data into information.
Piezo Vibration Sensor Hookup Guide
How to combine a piezo sensor, high-value resistor, and an Arduino to create a vibration sensor.
H3LIS331DL Accelerometer Breakout Hookup Guide
Hookup guide and library usage details for the triple axis accelerometer H3LIS331DL high-g accelerometer.
Qwiic Atmospheric Sensor (BME280) Hookup Guide
Measure temperature, humidity, barometric pressure with the SparkFun Atmospheric Sensor Breakout BME280 (Qwiic).
Tinker Kit Circuit Guide
This guide takes you through the basics of building 11 different circuits with the SparkFun Tinker Kit and how to program them using the Arduino IDE.