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 Communication

Asynchronous serial communication concepts: packets, signal levels, baud rates, UARTs and more!

Pulse Width Modulation

An introduction to the concept of Pulse Width Modulation.

Metric Prefixes and SI Units

This tutorial will explain how to use and convert between the standard metric prefixes.

Monitor Sensor Data from Anywhere

Using WiFi to send sensor data from an ESP32 to a WiFi network and be able to read it from an IoT Dashboard from anywhere in the world.

SoftPot Hookup Guide

Equip your Arduino project with a sliding soft potentiometer to monitor position or adding linear control to your project.

Arduino Weather Shield Hookup Guide V12

Read humidity, pressure and luminosity quickly and easily. Add wind speed, direction and rain gauge for full weather station capabilities.

TFMini - Micro LiDAR Module Hookup Guide

The TFMini is a ToF (Time of Flight) LiDAR sensor capable of measuring the distance to an object as close as 30 cm and as far as 12 meters! The TFMini allows you to integrate LiDAR into applications traditionally reserved for smaller sensors such as the SHARP GP-series infrared rangefinders.

Analog MEMS Microphone (VM2020) Hookup Guide

Get started with the SparkFun analog MEMS microphone breakout board! In this tutorial, we will be connecting the differential MEMS microphone to an Arduino using the WM8960 audio codec.