RFID module is connected to a usb to serial converter (link : https://www.rhydolabz.com/interfacing-modules-c-80/usb-to-rs232-converter-cp2102-p-1944.html). The converter has pinouts Tx,Rx,PWR OUT and GND. How can I use these to connect it to Arduino Uno serial pins Tx and Rx?
Photo is attached below.
Post links to your hardware. The EM-18 module itself doesn't need an USB to serial converter to connect to an Arduino.
Sorry about the cross post. New at the forum. The thing is a bought this at a local electronics store and it's pretty far away. So And yeah, EM18 does not need a USB to serial converter but generally the EM18 boards have TTL pinouts. My board does not have TTL pinouts. So I have to access the tx, rx, gnd pins through the usb to serial converter.
In the image you can see the back side of the usb to serial converter. Link to RFID module but I doubt it will be helpful.
link: RFID Reader - Serial Out at Rs 480/piece | Radio-frequency identification Module in Mumbai | ID: 11467108673
Thank You for your help.
Post schematics of your EM18 board! Without it we're just guessing here and that's a waste of time.
If you don't got it from the vendor (never buy such things from vendors you don't get the necessary documentation), reverse engineer yourself by following the traces. It doesn't look like there is a TTL-to-RS232 adapter chip on the board.
