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    Cooling the Duet Maestro

    Duet Hardware and wiring
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    • Master_Aar
      Master_Aar last edited by Master_Aar

      I am planning a build that uses a Duet board, most likely the Duet Maestro, and I am currently thinking about board cooling. Now I know that not all printer mainboards need cooling, but I would like to cool this one. My question is, would it be effective to cool the bottom of the board? This will be mounted on a flat surface, and having a fan blow air underneath the board would be easier to implement, especially since no connectors are blocking anything. I cannot mount a fan directly above the board as my vertical space is very limited, so I will need to have a fan blowing from the side. Which side, top or bottom, is the question...

      3dmntbighker 1 Reply Last reply Reply Quote 0
      • Veti
        Veti last edited by

        there is a post about this for the wifi
        https://forum.duet3d.com/topic/8451/found-a-heatsink

        1 Reply Last reply Reply Quote 1
        • nhof
          nhof last edited by

          On the maestro most of the stepper driver heat is being dumped into the ground plane copper of the board thru thermal vias under the chip.

          So the short answer is yes, cooling the bottom of the board should be effective. The long answer is you'll have to test your own setup.

          Master_Aar 1 Reply Last reply Reply Quote 1
          • Master_Aar
            Master_Aar @nhof last edited by Master_Aar

            @Veti and @nhof thanks! I will see how it works once this build starts (really just planning right now)

            1 Reply Last reply Reply Quote 0
            • 3dmntbighker
              3dmntbighker @Master_Aar last edited by

              @master_aar said in Cooling the Duet Maestro:

              I am planning a build that uses a Duet board, most likely the Duet Maestro, and I am currently thinking about board cooling. Now I know that not all printer mainboards need cooling, but I would like to cool this one. My question is, would it be effective to cool the bottom of the board? This will be mounted on a flat surface, and having a fan blow air underneath the board would be easier to implement, especially since no connectors are blocking anything. I cannot mount a fan directly above the board as my vertical space is very limited, so I will need to have a fan blowing from the side. Which side, top or bottom, is the question...

              Maestro has less load capacity than Ethernet and WiFi, and DC42 usually says under most conditions active cooling isn't needed. Mine has bottom cooling but I probably don't need it.

              Scratch built CoreXY with Maestro
              Heavily modified Ender 3 with Maestro
              MPCNC work in progress with Duet WiFi

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

                The Maestro typically needs fan cooling if the motors are set to 1A current or higher. Preferably, use a fan to blow air from the edge of the Duet along the line of stepper driver chips on both sides of the board. I don't advise using a fan to blow air directly at the board from above or underneath because if you do then there will be a dead zone with very little cooling directly under the centre of the fan.

                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

                3dmntbighker 1 Reply Last reply Reply Quote 1
                • 3dmntbighker
                  3dmntbighker @dc42 last edited by

                  @dc42 said in Cooling the Duet Maestro:

                  The Maestro typically needs fan cooling if the motors are set to 1A current or higher. Preferably, use a fan to blow air from the edge of the Duet along the line of stepper driver chips on both sides of the board. I don't advise using a fan to blow air directly at the board from above or underneath because if you do then there will be a dead zone with very little cooling directly under the centre of the fan.

                  What if I'm pulling air from the center instead of pushing. Presumably it enters mostly from the edges past the driver chip since my mount has a channel that is open in that area.

                  Scratch built CoreXY with Maestro
                  Heavily modified Ender 3 with Maestro
                  MPCNC work in progress with Duet WiFi

                  dc42 1 Reply Last reply Reply Quote 0
                  • dc42
                    dc42 administrators @3dmntbighker last edited by

                    @3dmntbighker said in Cooling the Duet Maestro:

                    @dc42 said in Cooling the Duet Maestro:

                    The Maestro typically needs fan cooling if the motors are set to 1A current or higher. Preferably, use a fan to blow air from the edge of the Duet along the line of stepper driver chips on both sides of the board. I don't advise using a fan to blow air directly at the board from above or underneath because if you do then there will be a dead zone with very little cooling directly under the centre of the fan.

                    What if I'm pulling air from the center instead of pushing. Presumably it enters mostly from the edges past the driver chip since my mount has a channel that is open in that area.

                    There will still be a dead zone at the centre.

                    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

                    3dmntbighker 1 Reply Last reply Reply Quote 0
                    • 3dmntbighker
                      3dmntbighker @dc42 last edited by

                      @dc42 said in Cooling the Duet Maestro:

                      @3dmntbighker said in Cooling the Duet Maestro:

                      @dc42 said in Cooling the Duet Maestro:

                      The Maestro typically needs fan cooling if the motors are set to 1A current or higher. Preferably, use a fan to blow air from the edge of the Duet along the line of stepper driver chips on both sides of the board. I don't advise using a fan to blow air directly at the board from above or underneath because if you do then there will be a dead zone with very little cooling directly under the centre of the fan.

                      What if I'm pulling air from the center instead of pushing. Presumably it enters mostly from the edges past the driver chip since my mount has a channel that is open in that area.

                      There will still be a dead zone at the centre.

                      Party pooper 😉

                      Scratch built CoreXY with Maestro
                      Heavily modified Ender 3 with Maestro
                      MPCNC work in progress with Duet WiFi

                      1 Reply Last reply Reply Quote 0
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