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    Duex5 GPIO pins

    Duet Hardware and wiring
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    • St Taw
      St Taw last edited by

      Does anyone know the source and sink current capability of the GPIO pins when switched as an output.

      I have looked for data sheet of an ESP-07 but seems only Vmin and Vmax are defined (at least on what I downloaded)

      I believe from previous posts there is a 100K pullup on the board.

      I would like to know if it is a driven high output or simply a sink low.

      Thanks

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      • dc42
        dc42 administrators last edited by

        The chip that drives those I/O pins is a SX1509B. So that's the datasheet you need to look up.

        Duet WiFi hardware designer and firmware engineer
        Please do not ask me for Duet support via PM or email, use the forum
        http://www.escher3d.com, https://miscsolutions.wordpress.com

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        • St Taw
          St Taw last edited by

          Thanks for reply.

          So it appears to be best case 8mA source for logic 1 and 15mA sink for logic 0.

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