Learn to use potentiometers (variable resistors) in your projects.

A practical guide to transistors and their use

When your microcontroller needs to accurately read if a switch is flipped

How to use a rotary encoder in your CircuitPython projects!

Inside the ATMega328: a guided tour of a classic Microcontroller

In this guide, we design and build a ROM emulator

There are 2 types of memories: those you remember and those you don't.

Circuits that operate over time.

Putting logic gates together

Tools for working with digital circuits.

Binary numbers, Boolean logic, and logic gates.

Everything you need to know to use 555 timer chip.

Build a full-scale arcade controller for your pocket-scale Arduboy!

Stream Airtunes to Boomy!

Removes those pesky fumes whenever you reach for the iron

I2C addresses from 0x00 to 0x7F (inclusive)

Make a pinball controller for your iOS device using Teensy

Do you know how fast you were going?

they're a dime a dozen. Lets use them!

How to make a slide switch JST-PH adapter!

Level shifters are like little bilingual translators for your electronics!

Explore reading analog signals with the Circuit Playground.

Make a Simple JTAG Debugging FeatherWing for the M0

Make a custom wireless gamepad with Cherry MX Switches!