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. 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. It has built-in USB, more capabilities, and is comparable in price! So while we still carry the Trinket so that people can maintain some older projects, we no longer recommend it. This Pro Trinket development kit is the more powerful version of the Trinket (RS 124-5509, 124-5506) with around four times the perfoDeprecation Warning: The Trinket bit-bang USB technique it uses doesn't work as well as it did in 2014, many modern computers won't work well. 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. You can easily programme the Pro Trinket with the AVRdude and/or the Arduino IDE.

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