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.
Pulse Width Modulation
An introduction to the concept of Pulse Width Modulation.
AST-CAN485 Hookup Guide
The AST CAN485 is a miniature Arduino in the compact form factor of the ProMini. In addition to all the usual features it has on-board CAN and RS485 ports enabling quick and easy interfacing to a multitude of industrial devices.
Programming an FPGA
Come look at the basics of working with Field Programmable Gate Arrays.
Piezo Vibration Sensor Hookup Guide
How to combine a piezo sensor, high-value resistor, and an Arduino to create a vibration sensor.
TMP102 Digital Temperature Sensor Hookup Guide
How to connect and use the SparkFun Digital Temperature Sensor Breakout - TMP102 with an Arduino.
Capacitive Touch Slider (CAP1203) Hookup Guide
An easy and Qwiic way to add capacitive touch to any of your projects using the CAP1203! In this guide, we go over how to connect and set up your Capacitive Touch Slider so you can start playing with it right away.
Getting Started with the A111 Pulsed Radar Sensor
Get started with the Acconeer A111 SDK with a Raspberry Pi! The tiny A111 pulsed coherent radar (PCR) adds high-precision, cutting-edge distance measurement for speed-, material-, motion-, or gesture-sensing projects! We’re not talking about simple ultrasonic, or even infrared sensors here, but 60GHz radar!