And, for a serial connection, you can also use an FTDI cable to connect to the FTDI port. There’s even a reset button for entering the bootloader or restarting the program, plus LED signals for bootloading. We're no longer selling this pack of Trinket 3V+5V, we recommend our Trinket M0 which has better USB support, way faster processor, a ton more memory and CircuitPython support Be the life of your (hackerspace) party when you show up with this six-pack Get 6 Trinkets at 12 off - comes with 3 x 3V Trinkets, and 3 x 5V Trinkets. If you don't perform a pre-check on the code and your computer takes a while to process the code it may miss the upload window, starting the upload before the Trinket is plugged in. You can easily programme the Pro Trinket with the AVRdude and/or the Arduino IDE. We also added Optiboot support, so you can either program your Pro Trinket over USB or with a FTDI cable just like the Pro Mini and friends. My process for the Trinket involves building the code, running a check on syntax, clicking the upload button and immediately plugging the Trinket into the USB cable. It’s powerful beyond its size too – the Pro Trinket features Microchips ATtiny85 MCU with 8KB program flash, 20 MIPS CPU, 5 PWMs, 2 8 bit timers, and it uses the Atmel ATmega328P microcontroller, 28K of flash, 2K of RAM and 18 GPIO. Thanks to its size, you can slip this board into pretty much any prototype. Coming in at a tiny 38mm x 18mm x 2mm (1.5″ x 0.7″ x 0.2″) (without headers), it gives you easy access to the ATtiny85 MCU for development and programming. Small is beautiful – and that’s especially true of the Adafruit Pro Trinket 5V development board.

Programming adafruit trinket 5v