Telecnatron Forum

USB To RS232 Serial Adapter Dongle

Using ⅛" stereo plugs, sockets and cables is a convenient way of connection RS232 serial lines between PCs and micro-controllers. Here is a simple little dongle incorporating a USB-to TTL-serial module, a max2323 and an ⅛" stereo jack. TX and RX lines are configurable via jumpers.

Identify Components: You will need a USB to UART converter chip (such as the popular CP2102 or FT232RL), female RS232 connector, capacitors, resistors, and a USB connector.

Design the Circuit: Create a schematic diagram of the circuit, showing how the USB to UART converter chip connects to the RS232 connector. Include any necessary components like capacitors for stability and voltage regulation.

Here are the electronic components you need.