Data Sheet

Freetronics board before, please follow the steps shown here for installation of the USB driver.
This only needs to be done once.
Connecting The Hardware
1. Connect the USB Serial Adapter to your computer using the supplied micro USB cable.
2. Check that the output voltage switch is in the correct position for your device. The selected
voltage will be supplied to your device through the 6-pin header on the pin labelled "VOUT".
3. Connect the USB Serial Adapter to your project using the built-in 6-pin header.
Usage
The USB Serial Adapter will appear to your computer as a virtual serial port. You should see it
listed as an available port in your software shortly after you plug it in. It automatically handles
different serial speeds transparently, so select the serial port speed in your software that your end
device (connected to the 6-pin header) expects to see.
Replacing The Firmware
The USB Serial Adapter comes pre-loaded with the same firmware installed on Arduino boards
into the ATmega16u2 used to provide the USB interface. In fact the USB Serial Adapter can be
considered to be equivalent to that part of the Arduino, with the rest removed.
However, you can also use the USB Serial Adapter as a tiny AVR development board, installing
whatever firmware you like into the ATmega16u2 MCU. The ICSP header is compatible with
the USBasp ICSP Programmer, so you can reflash the board with your own project and take
advantage of the USB interface and I/O breakouts for your own purposes.