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!
Pull-up Resistors
A quick introduction to pull-up resistors - whey they're important, and how/when to use them.
Serial Communication
Asynchronous serial communication concepts: packets, signal levels, baud rates, UARTs and more!
Series and Parallel Circuits
An introduction into series and parallel circuits.
Monitor Sensor Data from Anywhere
Using WiFi to send sensor data from an ESP32 to a WiFi network and be able to read it from an IoT Dashboard from anywhere in the world.
SIK Keyboard Instrument
We can use the parts and concepts in the SparkFun Invetor's Kit to make a primitive keyboard instrument.
H3LIS331DL Accelerometer Breakout Hookup Guide
Hookup guide and library usage details for the triple axis accelerometer H3LIS331DL high-g accelerometer.
Motion Controlled Wearable LED Dance Harness
Control LEDs based on your movement using an accelerometer! Make your LEDs breathe by fading in and out when laying on the floor, turn off the LEDs when moving to your side, or make the LEDs blink in a headstand!
Garmin LIDAR-Lite v4 (Qwiic) Hookup Guide
Connecting the Garmin LIDAR-Lite v4 to a microcontroller just got easier! Check out our hookup guide to get started.