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!
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.
Getting Started with LTspice
LTspice is a high performance SPICE simulator, schematic capture and waveform viewer with an impressive library of passive devices. Over 1000 models are included in the download but you can also add third party models.
First FPGA Project - Getting Fancy with PWM
An initial project using Alchitry's onboard FPGA to manipulate PWM
External IO and Metastability
Why external signals can cause metastability and how to use constraint files to manage this
Reed Switch Hookup Guide
Magnetically-actuated reed switches are the perfect component for non-contact proximity sensors. This tutorial provides a quick overview and example hook up.
Hazardous Gas Monitor
Build a portable gas monitor to check for dangerous levels of hazardous gases.
SparkFun gator:soil Hookup Guide
The gator:soil is analog soil moisture sensor. This tutorial will get you started using the gator:soil with the micro:bit platform.
Turn a Qwiic Ultrasonic Distance Sensor into a Garage Distance Sensor
This tutorial will take your SparkFun Qwiic Ultrasonic Distance Sensor to the next level by turning it into a parking distance sensor!