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 Communication
Asynchronous serial communication concepts: packets, signal levels, baud rates, UARTs and more!
Polarity
An introduction to polarity in electronic components. Discover what polarity is, which parts have it, and how to identify it.
Alternating Current (AC) vs. Direct Current (DC)
Learn the differences between AC and DC, the history, different ways to generate AC and DC, and examples of applications.
What is a Battery?
An overview of the inner workings of a battery and how it was invented.
MAX31855K Thermocouple Breakout Hookup Guide
Learn how to take readings with a k-type thermocouple using the MAX31855K cold-junction-compensated k-type thermocouple-to-digital converter.
Soil Moisture Sensor Hookup Guide
A quick hookup guide and project to get you started with the Soil Moisture Sensor from SparkFun.
Qwiic Flex Glove Controller Hookup Guide
Is your finger bent? Is your finger straight? The Qwiic Flex Glove controller board will answer this age old question for you with the flex sensor!
Displaying Sensor Data with Bluetooth
In our previous Bluetooth tutorial called Sending Sensor Data Via Bluetooth, we showed how to display data from a triple axis accelerometer over the Arduino IDE’s serial monitor. Continuing off of the first tutorial, we are going to expand this project to include more capabilities for visualizing and interacting with your accelerometer data.