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.
Polarity
An introduction to polarity in electronic components. Discover what polarity is, which parts have it, and how to identify it.
Analog vs. Digital
This tutorial covers the concept of analog and digital signals, as they relate to electronics.
Magnetic Levitation
This tutorial will show you how to build a magnetic levitation circuit using common parts.
Hackers in Residence - Hacking MindWave Mobile
Review, teardown, and hacking tutorial for the MindWave Mobile, a $99 commercial grade EEG sensor.
9DoF Sensor Stick Hookup Guide
How to connect and use the SparkFun 9 Degrees of Freedom Sensor Stick with an Arduino
SparkFun RTK Express Hookup Guide
Learn how to use the enclosed RTK Express product to achieve millimeter level geospatial coordinates.
MicroMod Qwiic Pro Kit Project Guide
The MicroMod Qwiic Pro Kit was designed to allow users to get started with Arduino without the need for soldering or a breadboard. We've included three inputs (a joystick, accelerometer, and proximity sensor) and one display that can be daisy chained to the MicroMod SAMD51 Processor Board.