LED Gumball Machine

Pages
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!

Pull-up Resistors

A quick introduction to pull-up resistors - whey they're important, and how/when to use them.

Pulse Width Modulation

An introduction to the concept of Pulse Width Modulation.

Programming an FPGA

Come look at the basics of working with Field Programmable Gate Arrays.

First FPGA Project - Getting Fancy with PWM

An initial project using Alchitry's onboard FPGA to manipulate PWM

Vernier Shield Hookup Guide

A guide to using the Vernier Shield

HMC6343 3-axis Compass Hookup Guide

How to hook the HMC6343 -- a high-end, tilt-compensated compass module -- up to an Arduino. Never get lost again!

Interactive LED Music Visualizer

Use an Arduino and the SparkFun Sound Detector to create visualizations on Addressable RGB LED strips.

Air Quality Sensor - SGP40 (Qwiic) Hookup Guide

Get started measuring indoor air quality with the SparkFun Air Quality Sensor - SGP40 (Qwiic) Hookup Guide.