LED Gumball Machine
Contributors:
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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!
Analog to Digital Conversion
The world is analog. Use analog to digital conversion to help digital devices interpret the world.
Pulse Width Modulation
An introduction to the concept of Pulse Width Modulation.
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.
Lessons in Algorithms
Learn techniques on how to use Finite Impulse Response (FIR) filters and other data-processing tools to turn data into information.
Touch Potentiometer Hookup Guide
Learn how to use the SparkFun Touch Potentiometer to control lighting, volume or other inputs in your daily life.
Qwiic Proximity Sensor (VCNL4040) Hookup Guide
The SparkFun Qwiic Proximity Sensor is a great, qualitative proximity (up to 20 cm) and light sensor. This hookup guide covers a few examples to retrieve basic sensor readings.
SparkFun gator:particle Hookup Guide
The gator:particle is an I2C heart-rate monitor and pulse oximeter that can be used as a particle sensor. This tutorial will get you started using the gator:particle with the micro:bit platform.
Qwiic Digital Desk Sign with MicroMod
Make a Qwiic-enabled digital desk sign with a MicroMod SAMD51 Processor Board's USB Host and a USB keyboard!