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rs232 problem - Printable Version

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+--- Thread: rs232 problem (/showthread.php?tid=6761)

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rs232 problem - alex989 - 09-22-2024

Hi,
I'm trying to use the rs232 port of the board but I'm some trouble.
to test it i have done a bridge from pin 2 and 3 of dsub connector and seems that the bytes that send doesn't been received.
i attach an other rs232 module in the same pin and with this module the bytes that send also been received.
seems that is the rs232 module of the board that have some problem


RE: rs232 problem - admin - 09-22-2024

take a photo , how you connect with wires.


RE: rs232 problem - alex989 - 09-23-2024

i have done a bridge with a wire from pin2 and pin 3


RE: rs232 problem - admin - 09-23-2024

take photo is better.


RE: rs232 problem - alex989 - 09-23-2024

This is the bridge


RE: rs232 problem - admin - 09-23-2024

short these 2 pins, check whether work well. on the bottom of KC868-A6 PCB board.
   


RE: rs232 problem - alex989 - 09-24-2024

I try to connect but doesn't change anything.
In the log I see only the output traffic


RE: rs232 problem - admin - 09-24-2024

can you write a simple arduino code, just send message, print receive message. let pin2,pin3 short. check the receiver whether can receive message.


RE: rs232 problem - alex989 - 09-24-2024

Have you an example code?


RE: rs232 problem - admin - 09-24-2024

tomorrow when i have free time, write a test code for you.