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!
Analog to Digital Conversion
The world is analog. Use analog to digital conversion to help digital devices interpret the world.
Pulse Width Modulation
An introduction to the concept of Pulse Width Modulation.
Lessons in Algorithms
Learn techniques on how to use Finite Impulse Response (FIR) filters and other data-processing tools to turn data into information.
RFID Basics
Dive into the basics of Radio Frequency Identification (RFID) technology.
Soil Moisture Sensor Hookup Guide
A quick hookup guide and project to get you started with the Soil Moisture Sensor from SparkFun.
Qwiic Digital Indoor Thermometer
Qwiic-ly build a digital indoor thermometer to measure the ambient temperature of the room and display it using an OLED on an I2C bus!
Wireless Timing Project
Time for racing, let's make a wireless timing device using ESP32 wireless communication.
How to Run a 5V Device On a 3.3V System With Qwiic
Power up your 5V I2C devices on the Qwiic system! This tutorial shows you how to use the SparkFun Qwiic 5V Boost to integrate power-hungry sensors like the SEN55 seamlessly.