LED Gumball Machine
Contributors:
Nate
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.
Logic Levels
Learn the difference between 3.3V and 5V devices and logic levels.
How Does an FPGA Work?
The What, How, Why, and When of Field Programmable Gate Arrays, aka FPGAs
Sending Sensor Data Over WiFi
This tutorial will show you how setup a simple peer-to-peer connection to send and receive sensor data between two ESP32 WiFi boards.
Experiment Guide for RedBot with Shadow Chassis
This Experiment Guide offers nine experiments to get you started with the SparkFun RedBot. This guide is designed for those who are familiar with our SparkFun Inventor's Kit and want to take their robotics knowledge to the next level.
AT42QT101X Capacitive Touch Breakout Hookup Guide
Learn how to use the simple SparkFun AT42QT1010 and AT42QT1011 capacitive touch breakout boards.
Qwiic Proximity Sensor (VCNL4040) Hookup Guide
The SparkFun Qwiic Proximity Sensor is a great, qualitative proximity (up to 20 cm) and light sensor. This hookup guide covers a few examples to retrieve basic sensor readings.
Qwiic Pressure Sensor (BMP581) Hookup Guide
Get started with the SparkFun Pressure Sensor - BMP581 (Qwiic) following this Hookup Guide