We designed a USB bootloader so you can plug it into any computer and reprogram it over a USB port just like an Arduino.
![adafruit trinket serial adafruit trinket serial](https://cdn-learn.adafruit.com/assets/assets/000/032/847/medium800/trinketdims.gif)
The Attiny85 is a fun processor because despite being so small, it has 8K of flash, and 5 I/O pins, including analog inputs and PWM ‘analog’ outputs. It’s our lowest-cost arduino-IDE programmable board! Perfect for when you don’t want to give up your expensive dev-board and you aren’t willing to take apart the project you worked so hard to design. We wanted to design a microcontroller board that was small enough to fit into any project, and low cost enough to use without hesitation.
![adafruit trinket serial adafruit trinket serial](https://cdn-learn.adafruit.com/guides/cropped_images/000/000/693/medium640/protrin.jpg)
Trinket may be small, but do not be fooled by its size! It’s a tiny microcontroller board, built around the Atmel ATtiny85, a little chip with a lot of power. In this tutorial, you’ll see how we can write a middle-man program that communicates with the Trinket and com0com, so that a serial terminal (such as the one built into Arduino IDE) can talk with the other end of com0com. In Windows, you can emulate a fake serial port bridge using a utility named com0com. However, there’s a work-around for this problem. USB standards prevents low speed USB devices to truly act as virtual serial ports, which is why we cannot use a serial terminal to communicate with the Trinket directly.
![adafruit trinket serial adafruit trinket serial](https://cdn-shop.adafruit.com/970x728/5335-00.jpg)
But the Trinket can only become a low-speed USB device because of its limited hardware. The Trinket has a USB port that is used for bootloading.
#Adafruit trinket serial how to#
HOW TO – Fake USB Serial with a TRINKET The Adafruit Learning System.