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 then use this circuit again and again in future. You can easily programme the Pro Trinket with the AVRdude and/or the Arduino IDE. In this project, you will create one basic electronic circuit powered by an Adafruit Trinket Pro 5V. 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. Ive used the Trinket with short Neopixel strips and they work great as long as its within the limits of the Trinkets memory capacity. 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. Adafruit just posted how to make code changes to work around this and I will update the code below when I get a chance.Small is beautiful – and that’s especially true of the Adafruit Pro Trinket 5V development board.

NOTE: After posting this code I found that there was an issue using PWM on pin 4. So while we still carry the Trinket so that people can maintain some older projects, we no longer recommend it. Required hardware includes an Adafruit Trinket microcontroller (5V or 3.3V), an Adafruit 7-Segment LED Backpack, and a momentary, normally-open pushbutton. Deprecation Warning: The Trinket bit-bang USB technique it uses doesnt work as well as it did in 2014, many modern computers wont work well. This tiny board is using the ATtiny85 microcontroller and it has 8K of flash memory, 5 I/O pins (including analog inputs and PWM outputs) and a USB connection (. It is important to disconnect the trinket from the PCB when uploading code because digital pin #4 is shared with the USB port. Required libraries include TinyWireM, AdafruitLEDBackpack and AdafruitGFX. Adafruit Trinket M0 - for use with CircuitPython & Arduino IDE. This item: Adafruit Trinket - Mini Microcontroller - 5V Logic ADA1501 11.32. The main loop simply cycles through a series of colors with a delay between each color change. Some of these items ship sooner than the others. The first part of the code defines the pins we want to use and provides functions for writing to the LEDs. First of all follow the instructions on the Adafruit web site for setting up your Arduino IDE for use with the trinket. We are now ready to write some code and upload it to the trinket.

Adafruit trinket 5v first project