This USBtoserial adapter lets you easily connect a TTL serial device to a PC by acting as a virtual serial port. The board is a MicroUSB carrier for the Silicon Labs CP2104 USBtoUART bridge that provides access to all of its control signal pins and GPIO pins. This USBtoserial adapter is a breakout board for the Silicon Labs CP2104 USBtoUART bridge and it is a great solution for connecting microcontroller projects and other logiclevel serial devices to a personal computer. The tiny unit measures only 0.6″ × 0.95″ including its MicroUSB connector. It offers several options for accessing the data control and GPIO pins on the CP2104 all of which are made available on a 0.1″ spacing. This board uses 3.45 V signal levels by default but the signal pins can tolerate higher voltages allowing the adapter to be used with 5 V systems that see 3.45 V as a logic high. The green LED on the SUSPEND line indicates an active USB connection when lit. The adapter looks like a standard virtual serial port (COM port) to the computer’s operating system which means it can be used with any software designed to work with a serial port (even a legacy RS232 port). The CP2104 is a fullspeed USB 2.0 device and allows baud rates of up to 2 Mbps. Drivers are available from Silicon Labs for Windows XP Windows Vista Windows 7 Windows 8 Windows 10 Linux and Mac OS X.
