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!
I2C
An introduction to I2C, one of the main embedded communications protocols in use today.
Analog vs. Digital
This tutorial covers the concept of analog and digital signals, as they relate to electronics.
Programming an FPGA
Come look at the basics of working with Field Programmable Gate Arrays.
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.
Qwiic OpenLog Hookup Guide
The updated Qwiic version of the OpenLog Hookup Guide
RHT03 (DHT22) Humidity and Temperature Sensor Hookup Guide
Measure relative humidity and temperature or your environment with the RHT03 (a.k.a DHT22) low cost sensor on a single wire digital interface connected to an Arduino!
SparkFun Pulse Oximeter and Heart Rate Monitor Hookup Guide
Find out your oxygen saturation level or check out your heart rate using the MAX30101 biometric sensor and MAX32664 Biometric Hub via I2C!
SparkFun GPS Dead Reckoning NEO-M8U Hookup Guide
The u-blox NEO-M8U is a powerful GPS units that takes advantage of untethered dead reckoning (UDR) technology for navigation. The module provides continuous positioning for vehicles in urban environments and during complete signal loss (e.g. short tunnels and parking garages). We will quickly get you set up using the Qwiic ecosystem and Arduino so that you can start reading the output!