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!

Pull-up Resistors

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

Serial Communication

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

Introduction to MQTT

An introduction to MQTT, one of the main communication protocols used with the Internet of Things (IoT).

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.

TFMini - Micro LiDAR Module (Qwiic) 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 easily integrate LiDAR into applications traditionally reserved for smaller sensors such as the SHARP GP-series infrared rangefinders. With the added Qwiic feature, you can quickly connect to the sensor via I2C!

Basic Autonomous Kit for Sphero RVR Assembly Guide

Get your Basic Autonomous Kit for Sphero RVR all hooked up with this guide!

SparkFun Triple Axis Accelerometer Breakout - BMA400 (Qwiic) Hookup Guide

Add low power triple axis motion monitoring to your Qwiic project using the SparkFun Triple Axis Accelerometer Breakout - BMA400 (Qwiic).

How to Run a 5V Device On a 3.3V System With Qwiic

Power up your 5V I2C devices on the Qwiic system! This tutorial shows you how to use the SparkFun Qwiic 5V Boost to integrate power-hungry sensors like the SEN55 seamlessly.