Adafruit Pro Trinket - 5V 16MHz

The Pro Trinket 5V is an upgraded version of the popular Trinket, combining everything you love about Trinket with the power of the ATmega328P Arduino chip. It's like an Arduino Pro Mini, but with more pins, more FLASH, and built-in USB support, making it a great choice for compact projects requiring a small, powerful board.

Key Features:

• ATmega328P Chip: The same chip used in Arduino UNO/Duemilanove/Mini, running at 16 MHz, with 28K FLASH and 2K RAM.
• Onboard USB Bootloader: Features a micro-USB jack for easy programming and bootloading support, using either USB or FTDI cable.
• More Pins & Resources: Includes 18 GPIO pins, 2 extra analog inputs, and 28K of flash, providing more capabilities for complex projects.
• Compact Size: Measures just 1.5" x 0.7" x 0.2" (without headers), offering the power of an Arduino UNO in a small form factor.
• Power Supply: Equipped with an onboard 5V regulator that provides 150mA of output (suitable for most projects, but not high-current peripherals). Can be powered by USB or an external battery, with automatic switching between power sources.
• Compatible with Arduino IDE: 99% of Arduino sketches work out of the box, making it easy to port your projects to the Pro Trinket.
• Optional FTDI Port: For reprogramming using an FTDI cable, allowing for serial communication.
• Bootloader Size: 4KB of FLASH is reserved for the bootloader, leaving 28,672 bytes for your sketches.
• Mounting Holes: Easy to integrate into enclosures or projects with 0.6" wide sockets.

Additional Features:

• Reset Button: For entering bootloader mode or restarting your program.
• LED Indicators: Green power LED and red LED for pin #13.
• Overcurrent & Thermal Protection: Onboard 5V regulator features thermal and current-limit protection for added durability.

Dimensions: 38mm x 18mm x 2mm / 1.5" x 0.7" x 0.08"
Height with MicroUSB: 4mm / 0.16"
Weight: 2.6g

Note: While the Pro Trinket is still available for maintaining older projects, modern computers may not work well with the bit-bang USB technique. For new projects, we recommend exploring alternatives such as the Metro Mini or ItsyBitsy series, which offer built-in USB support.