How to Install an ATtiny Bootloader With Virtual USB

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Contributors: Shawn Hymel
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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:

Installing a Bootloader on the MicroView

Fix your bootloader-less MicroView! This tutorial covers how to: disassemble the MicroView, wire it up to an assortment of programmers, program the bootloader, and test it out.

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.

Electronic E-craft Terrarium

A guest tutorial on an Electronic Terrarium from the Performative Sculpture class of Parsons DT.

SparkFun Qwiic Dual Solid State Relay Hookup Guide

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