Adafruit ProTrinket | DigiKey Daily
Adafruit’s Pro Trinket is perfect for miniaturizing projects that have been prototyped on an Arduino UNO or for expanding projects that need more than the original Trinket can offer. The Pro Trinket is based on the same ATmega328P as the UNO and is compatible with the Arduino IDE, making most existing sketches immediately compatible. The board is available in 5 V, 16 MHz and 3 V, 12 MHz varieties to suit the performance and power consumption needs of your next project. The micro-USB jack can be used to program and power the device, and the Pro Trinket accepts an autoswitched external power supply up to 16 V.