Mini-USB jack for power and/or USB uploading, you can put it in a box or tape it up and use any USB cable for when you want to reprogram.USB bootloader with a nice LED indicator looks just like a USBtinyISP so you can program it with AVRdude (with a simple config modification) and/or the Arduino IDE (with a few simple config modifications).Internal oscillator runs at 8MHz but can be doubled in software for 16MHz.ATtiny85 on-board, 8K of flash, 512 bytes of SRAM, 512 bytes of EEPROM.The 5V version can run at 8 MHz or at 16MHz by setting the software-set clock frequency. Use the 5V one for sensors and components that can use or require 5V logic. Use the 3V one to interface with sensors and devices that need 3V logic, or when you want to power it off of a LiPo battery.

Both work the same but have different operating logic voltages. You can’t stack a big shield on it but for many small & simple projects, the Trinket will be your go-to platform. In fact, we even made some simple modifications to the Arduino IDE so that it works like a mini-Arduino board. We designed a USB bootloader so you can plug it into any computer and reprogram it over a USB port just like an Arduino. The Attiny85 is a fun processor because despite being so small, it has 8K of flash, and 5 I/O pins, including analogue inputs and PWM ‘ analogue’ 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. The 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.

Adafruit trinket 5v arduino ide