This page explains how to build a GIMX DIY USB adapter. Download the Arduino Leonardo drivers and unzip the archive. You should see your USB-to-UART driver (e.g. CP2102) connected to a COM port and the Arduino connected to another COM port. *Neither* of these are the COM ports you're looking for, in all likelihood.

FT231XS - USB to UART Bridge The FT231X is a USB to serial UART interface with full modem control and advanced features This IC comes in a 20-pin SSOP package and requires very few external components for operation! Guaranteed Genuine FTDI Chip Features: • Implements full v2.0 USB protocol • Needs no external crystal • Data transfer rates from 300 baud to 3 Mbaud at TTL levels • 512 byte receive buffer and 512 byte transmit buffer utilising buffer smoothing technology to allow for high data throughput. • 512 byte receive buffer and 512 byte transmit buffer utilising buffer smoothing technology to allow for high data throughput. • Transmit and receive LED drive signals.

• Integrated +3.3V level converter for USB I/O. • True 3.3V CMOS drive output and TTL input; Operates down to 1V8 with external pull-ups. Tolerant of 5V input.

• Royalty-Free Driver support for Windows, Linux, and Mac OSX Documents.

FT231XS - USB to UART Bridge The FT231X is a USB to serial UART interface with full modem control and advanced features. This IC comes in a 20-pin SSOP package and requires very few external components for operation! Guaranteed Genuine FTDI Chip Features: • Implements full v2.0 USB protocol • Needs no external crystal • Data transfer rates from 300 baud to 3 Mbaud at TTL levels • 512 byte receive buffer and 512 byte transmit buffer utilising buffer smoothing technology to allow for high data throughput. • 512 byte receive buffer and 512 byte transmit buffer utilising buffer smoothing technology to allow for high data throughput.

• Transmit and receive LED drive signals. • Integrated +3.3V level converter for USB I/O. • True 3.3V CMOS drive output and TTL input; Operates down to 1V8 with external pull-ups.

Tolerant of 5V input. • Royalty-Free Driver support for Windows, Linux, and Mac OSX Documents.