LED Gumball Machine

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Contributors: 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!

Light

Light is a useful tool for the electrical engineer. Understanding how light relates to electronics is a fundamental skill for many projects.

Pulse Width Modulation

An introduction to the concept of Pulse Width Modulation.

Processor Interrupts with Arduino

What is an interrupt? In a nutshell, there is a method by which a processor can execute its normal program while continuously monitoring for some kind of event, or interrupt. There are two types of interrupts: hardware and software interrupts. For the purposes of this tutorial, we will focus on hardware interrupts.

External IO and Metastability

Why external signals can cause metastability and how to use constraint files to manage this

Qwiic GRID-Eye Infrared Array (AMG88xx) Hookup Guide

The Panasonic GRID-Eye (AMG88xx) 8x8 thermopile array serves as a functional low-resolution infrared camera. This means you have a square array of 64 pixels each capable of independent temperature detection. It’s like having thermal camera (or Predator’s vision), just in really low resolution.

SparkFun gator:microphone Hookup Guide

The gator:microphone is an I2C sensor for detecting sound with an electret microphone. This tutorial will get you started using the gator:microphone with the micro:bit platform.

Temperature Sensor Comparison

A comparison of analog and digital temperature sensors. Which is better?

SparkFun Auto pHAT Hookup Guide

The pHAT to get your projects moving. This guide will help you get started using the Auto pHAT.