Hello, so i designed this PCB using info i found on the web and my limit knowledge,
The PC recognises the USB and gives it a Com port number but the serial end doesnt seem to work,,, any ideas?

 

You have another thread about this:
https://forum.allaboutcircuits.com/threads/usb-to-current-loop-converter.206009/
If this is the same topic, we can merge the two threads into one.

 

You have another thread about this:
https://forum.allaboutcircuits.com/threads/usb-to-current-loop-converter.206009/
If this is the same topic, we can merge the two threads into one.

Hello yes sorry i forgot i had an old thread