How to Install an ATtiny Bootloader With Virtual USB

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Contributors: Shawn Hymel

Resources and Going Further

While this is a lot of information to take in, it shows how to hack the Arduino IDE to load custom board definitions. These steps should work for other ATtiny devices that are supported by the micronucleus project, such as:

You might have to modify the pins_arduino.h file, however, if you plan to use a different ATtiny.

ATtiny84 Pinout

ATtiny84 and ATtiny84a pinout

If you need additional support, please check out the following resources.

If you want to go further with the ATtiny, please check out our additional tutorials that showcase the ATtiny:

Light Up Pennant with E-Textiles

Show your school spirit, geek pride, or fandom with a light up pennant using the LilyTwinkle or LilyPad Arduino.

Qwiic Joystick Hookup Guide

Looking for an easy way to implement a joystick to your next Arduino or Raspberry Pi project? This hookup guide will walk you through using the Qwiic Joystick with the Arduino IDE on a RedBoard Qwiic and in Python on a Raspberry Pi.

SparkFun Qwiic Quad Solid State Relay Kit Hookup Guide

A Hookup Guide to get you started with the SparkFun Qwiic Quad Solid State Relay Kit (say that five times fast!).

SparkFun Qwiic Dual Solid State Relay Hookup Guide

A Hookup Guide to get you started with the SparkFun Qwiic Dual Solid State Relay.