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    SD on DuetPanel does not read with accelerometer

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    • Daniel 0undefined
      Daniel 0
      last edited by

      Hello, I have a problem with reading the SD card on PanelDue, after installing an accelerometer above the Thermocouple daughterboard, it no longer reads the SD card if I remove the cable, why does it work? Thank you

      dc42undefined 1 Reply Last reply Reply Quote 0
      • dc42undefined
        dc42 administrators @Daniel 0
        last edited by

        @Daniel-0 it's because of the extra capacitance of the accelerometer cable, which uses the same SPI bus as the external SD card.

        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

        Daniel 0undefined 1 Reply Last reply Reply Quote 0
        • Daniel 0undefined
          Daniel 0 @dc42
          last edited by

          @dc42 Isn't it possible to disable the use of the accelerometer via firmware so that I don't have to open the printer to plug-unplug when I have to use it?

          droftartsundefined 1 Reply Last reply Reply Quote 0
          • droftartsundefined
            droftarts administrators @Daniel 0
            last edited by

            @Daniel-0 It's the cable itself that is causing the issue, not the accelerometer. There isn't really any other option other than disconnecting the accelerometer cable, at the Duet end, to stop signals bouncing up and down it and interfering, at least as I understand it.

            Ian

            Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

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