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.
Hexadecimal
How to interpret hex numbers, and how to convert them to/from decimal and binary.
External IO and Metastability
Why external signals can cause metastability and how to use constraint files to manage this
MPL3115A2 Pressure Sensor Hookup Guide
Getting started with the MPL3115A2 Pressure Sensor.
Experiment Guide for the Johnny-Five Inventor's Kit
Use the Tessel 2 and the Johnny Five Inventors kit to explore the world of JavaScript enabled hardware through 14 awesome experiments!
Magnetic Levitation
This tutorial will show you how to build a magnetic levitation circuit using common parts.
SparkFun GPS-RTK Dead Reckoning ZED-F9K Hookup Guide
The u-blox ZED-F9K is a powerful GPS-RTK unit that uses a fusion of IMU, wheel ticks, a vehicle dynamics model, correction data, and GNSS measurements to provide highly accurate and continuous position for navigation in the difficult conditions. We will quickly get you set up using the Qwiic ecosystem through Arduino so that you can start reading the output!