The bootloader is rugged and foolproof: this board wont up and die on you in the middle of a project!. 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 byte of SRAM, 512 bytes of EEPROM. Simply use a USB v2 port or a USB hub in between. Some computers' USB v3 ports don't recognize the Trinket's bootloader. Trinket does not have a Serial port connection for debugging so the serial port monitor will not be able to send/receive data. There are some things you trade off for such a small and low cost microcontroller! It can run at 8 MHz or at 16MHz by setting the software-set clock frequency.Įven though you can program Trinket using the Arduino IDE, it's not a fully 100% Arduino-compatible. You can't stack a big shield on it but for many small & simple projects the Trinket will be your go-to platform. After some simple modifications to the Arduino IDE, it works like a mini-Arduino board. Uses 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 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. It's a microcontroller board that is small enough to fit into any project, and low cost enough to use without hesitation. 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.
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