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!
Pulse Width Modulation
An introduction to the concept of Pulse Width Modulation.
Polarity
An introduction to polarity in electronic components. Discover what polarity is, which parts have it, and how to identify it.
Series and Parallel Circuits
An introduction into series and parallel circuits.
How Does an FPGA Work?
The What, How, Why, and When of Field Programmable Gate Arrays, aka FPGAs
Bark Back Interactive Pet Monitor
Monitor and interact with pets through this dog bark detector project based on the Raspberry Pi!
QRD1114 Optical Detector Hookup Guide
Use this IR LED/phototransistor fusion to sense objects in close proximity or even the color of a surface!
HIH-4030 Humidity Sensor Hookup Guide
Measure relative humidity with SparkFun's HIH-4030 Humidity Sensor Breakout.
OpenPIR Hookup Guide
How to use and customize the SparkFun OpenPIR motion sensor.