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.
Voltage, Current, Resistance, and Ohm's Law
Learn about Ohm's Law, one of the most fundamental equations in all electrical engineering.
Motors and Selecting the Right One
Learn all about different kinds of motors and how they operate.
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.
OpenScale Applications and Hookup Guide
OpenScale allows you to have a permanent scale for industrial and biological applications. Learn how to use the OpenScale board to read and configure load cells.
Qwiic Ambient Light Sensor (VEML6030) Hookup Guide
The VEML6030 is a high accuracy ambient light sensor with 16-bit resolution. This I2C sensor can detect light similar to the human eye response. Start detecting light levels in your environment!
SparkFun Qwiic Digital Temperature Sensor - TMP102 Hookup Guide
Get started using your SparkFun Digital Temperature Sensor - TMP102 (Qwiic) with this Hookup Guide!
Calibrating Your Odometry Sensor
In this tutorial, we will cover how to calibrate your Qwiic Optical Tracking Odometry Sensor (or "OTOS") with Arduino and Python Examples.