Barcode scanner uart Q&A Forum › Category: ESP32 › Barcode scanner uart 0 Vote Up Vote Down Jean-Marc Maugueret asked 3 months ago How to connect and use a uart Barcode scanner using ESP32 4 Answers 0 Vote Up Vote Down Sara Santos Staff answered 3 months ago Hi. Unfortunately, we don’t have any tutorials about that subject. Regards, Sara 0 Vote Up Vote Down Dave Coley answered 2 months ago Is the bar code scanner RS232 interface? If so I can probably help you… 0 Vote Up Vote Down Dave Coley answered 2 months ago Or TTL? What brand is it? Model number, etc… 0 Vote Up Vote Down Jean-Marc Maugueret answered 2 months ago Hi Dave, I will be using a Symbol scanner pn:LS2208-SR2000-1R. It has a 5V supply power input with RS23 2 output and will be connected to a RS232 to TTL converter on a 3V3 supply to my ESP32 -S3.