LED Gumball Machine

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Contributors: 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!

Metric Prefixes and SI Units

This tutorial will explain how to use and convert between the standard metric prefixes.

Hexadecimal

How to interpret hex numbers, and how to convert them to/from decimal and binary.

What is a Battery?

An overview of the inner workings of a battery and how it was invented.

LilyPad Basics: E-Sewing

Learn how to use conductive thread with LilyPad components.

AD8232 Heart Rate Monitor Hookup Guide

Learn how to create your very own heart rate monitor.

HMC6343 3-axis Compass Hookup Guide

How to hook the HMC6343 -- a high-end, tilt-compensated compass module -- up to an Arduino. Never get lost again!

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!

SparkFun Qwiic 3-Axis Accelerometer (ADXL313) Hookup Guide

Let's get moving with the SparkFun Triple Axis Digital Accelerometer Breakout - ADXL313 (Qwiic), a low cost, low power, up to 13-bit resolution, 3-axis accelerometer with a 32-level FIFO stack capable of measuring up to ±4g. This hookup guide will get users started reading measurements from the ADXL313, by Analog Devices, with an Arduino microcontroller, Jetson Nano, or Raspberry Pi.