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  • SteveCS's Avatar
    05-22-2023, 05:12 PM
    SteveCS replied to a thread 3.3v supply to opto-isolator in Project Guidance
    Ah... that is a pain. Got an ESP32 here... wonder what the output current of those pins is. 40mA max by the looks. Maybe I should try that
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  • SteveCS's Avatar
    05-22-2023, 03:47 PM
    SteveCS started a thread 3.3v supply to opto-isolator in Project Guidance
    Hi all Having a few slight issues sending a signal to a 6n137 opto-isolator. I 'think' this is the issue anyway. I am using a 3.3v high signal to drive it and I don't think it is switching on properly. This...
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    3 replies | 552 view(s)
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