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    PSU voltage - how important

    Duet Hardware and wiring
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    • balex29
      balex29 last edited by

      Hi
      I run a duet wifi from a cheap PSU and the voltage is displayed as 11.7 volts on the web interface
      I run a 240 volt heated bed using an SSR and this works well so I am happy to keep this
      Would a better quality PSU eg computer atx psu be better and possibly more stable in running the Duet
      What I am wondering is how sensitive are the stepper drivers to voltage change caused by the PSU and can voltage drift affect print quality

      Rob H

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      • DjDemonD
        DjDemonD last edited by

        I've one machine where the voltage is rock steady and another where it varies from 10.7 to 12.3. I wouldn't say I notice the difference between them in terms of print quality.

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        • dc42
          dc42 administrators last edited by

          The measurement of VIN is only accurate to about +/-3%, and the Duet is quite tolerant of variations in supply voltage. So don't worry about it. Version 1.20 firmware even compensates for the supply voltage when adjusting heating power, once you have run heater tuning in version 1.20.

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          • balex29
            balex29 last edited by

            thanks DC42 that puts my mind at ease

            Rob H

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