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    • J
      jbax reacted to Angelo's post in the thread Deport USB port to the case with Like Like.
      Hi, The ESD prolem doesn't cause a crash or errors on the device, but on the PC. USB controllers on PC doesn't handle problems on signal lines. I found that you could have 3 levels: 1) Driver returns errors, you can restart transmission by...
    • J
      jbax reacted to Angelo's post in the thread Deport USB port to the case with Like Like.
      Hi, If your application is protected against EMI, a simple usb-RS232 will do the job. Choose one based on FTDI devices. No surprises on the long term with drivers, new windows versions, fake units, ..... Canbus is also an option. It needs a...
    • J
      jbax reacted to PaulS's post in the thread Deport USB port to the case with Like Like.
      With respect to solution #4; wouldn't you need a connector to the outside world for this solution as well? I'm assuming here that the "external usb to uart controller" is inside the box on a kind of carrier PCB. Solution #1 might not be too bad...
    • J
      jbax reacted to PaulS's post in the thread Deport USB port to the case with Like Like.
      Allright, thanks for the additional clarification. So, if I understand you correctly: the USB port on the case will only be used for serial I/O. And you would like to avoid a cable for mechanical reasons, being the vibration of the cable that...
    • J
      jbax reacted to PaulS's post in the thread Deport USB port to the case with Like Like.
      What about these clamps for holding the cable in place? https://www.icotek.com/en/products/emc-cable-shield-clamps/pcb Icotek seem to have a lot of useful cable strain relief products. Paul
    • J
      jbax reacted to Angelo's post in the thread Deport USB port to the case with Like Like.
      Hi, Unless it is for diagnostic and/or configuration, use of USB in industrial environment is not a good idea. USB is not EMI resistant. A simple ESD on the connectors or case, and you loose the connection. Generaly, on the PC side. At best...
    • J
      jbax replied to the thread Deport USB port to the case.
      Thanks Angelo for your input. I previously did work with M12 connectors on some products in the transportation domain. For your suggestion, an alternative to A PC with com ports would be a usb/rs232 adaptor. We're not too concerned about ESD/EMI...
    • J
      jbax replied to the thread Deport USB port to the case.
      I didn't even knew that existed ! Thanks ! I'll look more into it BTW for solution #2 I may have found a lib that could help with using the USB host port as a USB device...
    • J
      jbax replied to the thread Deport USB port to the case.
      Thank so much Paul for your insight. I'll check with the rest of the team, and update the thread with the chosen solution. About murphy's law, my thinking is that a maintenance technician would still be able to pop the lid off and update the...
    • J
      jbax replied to the thread Deport USB port to the case.
      Thanks for your answer I realize some info is missing : the teensy will be soldered onto a main PCB board where we plan to put the usb to uart for solution 4. The user controls on the case, including the usb port, will preferably soldered...
    • J
      Hi all, I'm designing a product where I need the teensy to communicate with a software on a PC, via serial connection. For now in my tests I've used the USB device port on the teensy without any issues For the final product I'd like the customer...
    • J
      jbax replied to the thread TDM512.
      Resurecting this thread because I stumbled upon https://forum.pjrc.com/index.php?threads/tdm512.73977/#post-334534 If I'm not mistaken that means that I can use 1 AK on each data input pin (feeding the same clock to both codecs) and discard every...
    • J
      Greetings, I never thought about replying, late is better than never ! The solution we used (apart from the hardware revisions who lowered the noise) was to increase the sample rate of the ADC to make the noise utrasonic and inaudible.
    • J
      Thanks for the works ! Out of sheer curiosity, what is the maximum number of in/out did you manage to get working in your test At a quick glance on the code the audio samples bit depth is still hardcoded in 16bits right ? I ask because some...
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