Input Devices

How to hook a force-sensitive resistor up to an Arduino to measure pressure variances.

An overview of the flex sensor - a bendable variable resistor. Plus, example circuits and Arduino code to get you started!

How to assemble and use the Cherry MX Switch Breakout, allowing you to turn a matrix of mechanical switches into a full-size keyboard!

A series of Blynk projects you can set up on the Blynk Board without ever re-programming it.

An introduction to matrix scanning, using the SparkFun 4x4 Button Pad.

Learn how to use the SparkFun Touch Potentiometer to control lighting, volume or other inputs in your daily life.

Learn how you can use the SX1509 to control 16 LEDs or up to 64 buttons with just two pins.

This tutorial will walk you through making a timed power controller for interactive projects. You will learn how to add an on button that will provide power to your project for an amount of time and then turn off again.

Learn how to make a musical painting using the Bare Conductive Touch Board and Conductive Paint.

Learn the basics of how to get started with the SparkFun RFID Starter Kit.

How to use the Rotary Switch Potentiometer breakout board, with some sample applications.

How to hook-up, program, and modify your Maker Faire Badge for electronic fun.

Demonstrate mental chronometry with this simple reaction timer!

A tutorial on electronics' most overlooked and underappreciated component: the switch! Here we explain the difference between momentary and maintained switches and what all those acronyms (NO, NC, SPDT, SPST, ...) stand for.

Connectors are a major source of confusion for people just beginning electronics. The number of different options, terms, and names of connectors can make selecting one, or finding the one you need, daunting. This article will help you get a jump on the world of connectors.