

TX - also known as Digital #1, this is the hardware serial output pin.RX - also known as Digital #0, this is the hardware serial input pin.You can find more info for Trinket pinout in official Adafruit site here. Mounting holes, you can easily attach it to breadboard or plug it in your own circuit board!.Works with 99% of existing Arduino sketches (anything that doesn't use more than 28K, and doesn't require pins #2 and #7).


