Datasheet

Arduino IDE as you already set up, but 99% of Arduino projects will work out of the box!

Here's some things you may have to consider when adapting Arduino sketches:

Pins #2 and #7 are not available (they are exclusively for USB)

The onboard 5V regulator can provide 150mA output, not 800mA out

You cannot plug shields directly into the Pro Trinket

SoftwareSerial will not work on the 3V Pro Trinket without changes. See this FAQ.

There is no Serial-to-USB chip onboard. This is to keep the Pro Trinket small and inexpensive, you can use any

FTDI cable to connect to the FTDI port for a Serial connection. The USB connection is for uploading new code

only.

The bootloader on the Pro Trinket use 4KB of FLASH so the maximum sketch size is 28,672 bytes. The

bootloader does not affect RAM usage.

Trinket is supported on Linux, Mac OS or Windows!

Here's some handy specifications:

ATmega328P onboad chip in QFN package

16MHz clock rate, 28K FLASH available

USB bootloader with a nice LED indicator looks just like a USBtinyISP so you can program it with AVRdude

and/or the Arduino IDE (with a few simple config modifications).

Also has headers for an FTDI port for reprogramming

Micro-USB jack for power and/or USB uploading, you can put it in a box or tape it up and use any USB cable for

when you want to reprogram.

On-board 5.0V power regulator with 150mA output capability and ultra-low dropout. Up to 16V input, reverse-

polarity protection, thermal and current-limit protection.

Power with either USB or external output (such as a battery) - it'll automatically switch over

On-board green power LED and red pin #13 LED