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!

Serial Peripheral Interface (SPI)

SPI is commonly used to connect microcontrollers to peripherals such as sensors, shift registers, and SD cards.

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.

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.

External IO and Metastability

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

Piezo Vibration Sensor Hookup Guide

How to combine a piezo sensor, high-value resistor, and an Arduino to create a vibration sensor.

Raspberry Pi Zero Helmet Impact Force Monitor

How much impact can the human body handle? This tutorial will teach you how to build your very own impact force monitor using a helmet, Raspberry Pi Zero, and accelerometer!

Qwiic UV Sensor (VEML6075) Hookup Guide

Learn how to connect your VEML6075 UV Sensor and figure out just when you should put some sunscreen on.

Air Velocity Sensor Breakout - FS3000 Hookup Guide

Get started with the Air Velocity Sensor Breakout - FS3000!