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!
Analog to Digital Conversion
The world is analog. Use analog to digital conversion to help digital devices interpret the world.
Button and Switch Basics
A tutorial on electronics' most overlooked and underappreciated component: the switch! Here we explain the difference between momentary and maintained switches and what all those acronyms (NO, NC, SPDT, SPST, ...) stand for.
LogicBlocks & Digital Logic Introduction
Introducing fundamental digital logic concepts and LogicBlocks
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.
SoftPot Hookup Guide
Equip your Arduino project with a sliding soft potentiometer to monitor position or adding linear control to your project.
MAX30105 Particle and Pulse Ox Sensor Hookup Guide
The SparkFun MAX30105 Particle Sensor is a flexible and powerful sensor enabling sensing of distance, heart rate, particle detection, even the blinking of an eye. Get ready. Set. Shine!
Getting Started with MicroPython and the SparkFun Inventor's Kit for micro:bit
Learn MicroPython with the micro:bit.
Build Your Own High-Concentration CO2 Detector
The SparkFun STC31 CO2 Sensor can accurately measure CO2 concentrations up to 100% with high repeatability and long-term stability, thanks to humidity and temperature compensation provided by the built-in SHTC3. This tutorial will show you how!