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I have a a microbench device, it has his RS232 port.

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but I just can read data from this microbench device with this cable:

enter image description here

The microbench device have tx pin with -9V. How can I comunícate microbench device with raspberry using using uart ports GPIO 14 and GPIO 15?

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  • This question makes no sense. One uses USB the other GPIO pins! What is connected to what?
    – Milliways
    Commented Jun 3 at 22:34
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    I also suggest you use a spell checker, I am having to guess what you are trying to say.
    – Milliways
    Commented Jun 3 at 22:36
  • Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking.
    – Community Bot
    Commented Jun 5 at 8:07
  • If you do not want to use a USB to Serial cable like you've shown in your question but want to connect directly to the UART pins, you need a level converter that translates the RS232 voltage levels output by your Microbench device to TTL levels that can be safely used by the Raspberry Pi. You could use a module based on the MAX3232 (for example). Why is your question tagged with "python"?
    – StarCat
    Commented Jun 7 at 14:54
  • You will need an RS232 to TTL converter module.
    – liaifat85
    Commented Jun 7 at 15:03

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