Hi, I'm still waiting for my Duet Wifi to reach my inbox, but I've already started tinkering on how I can install the board, so I ended up looking at this page, in particular, the section regarding cooling.

I'm hoping I can adapt the Ender 3 stock electronics box and I've designed a pair of mounting brackets, but I'm wondering if my solution will be good enough for cooling.

I've ended up with a couple of cooling options and I wish your input on which one to choose:

• a 60mm fan sucking air from the top of the stepper drivers (air flow directed outward)
• a 40mm x 10mm air blower (one of those used as part cooling) blowing air on the bottom from front to back of the board, via a flow guide (not drawn)
• two 40mm x 10mm fans (those used for hot end heat sink cooling) blowing from the opposite side where the drivers are located, positioned roughly 1/3 down, 2/3 up

I can also use the first solution mounting the board upside down (so sucking air from the bottom), but I'm not very happy with that as all the connectors will be inaccessible unless I unscrew the board from the brackets...

Also, consider the Ender 3 stock electronics box has plenty of vents on the bottom and has a 5mm gap from the rest surface.

Due to the very limited space inside the box, I'm unable to apply any combination of the above, the only viable combination would potentially be the underside blower and the stock 40mm fan from the top, both pulling air inside...

Which option would you suggest, if any is viable?

Does the firmware report the drivers' temperature so I can monitor my solution without risking of blowing the driver chips?

What is the suggested operating temperature for the drivers?

Must I design a totally new electronics box and ditch the stock one completely?

@dc42 said in Duet Wifi + Ender 3: cooling with stock electronics box:

You won't need any fan cooling at all for a Duet WiFi controlling an Ender 3.

Are you saying I can just go along with the stock 40mm fan pulling air inside the box? That would be great, I could just need a mounting bracket in that case...

The firmware reports the CPU temperature. It can't read the driver temperatures, but it will tell you if they report an over temperature warning or shutdown.

Ok, thanks. Let's say I wish to monitor the driver temperatures with a thermocouple applied on the package (for sake of assuring everything works fine), what is the suggested operating temperature?
If I go for the 40mm fan I wish to monitor the situation for a few hours to ensure nothing gets too hot...

@phaedrux

@phaedrux said in Duet Wifi + Ender 3: cooling with stock electronics box:

Have you seen this? https://duet3d.dozuki.com/Wiki/Mounting_and_cooling_the_board

Yes, I've seen the page you linked, I linked it myself

I think the first option may be the best bet, as it pulls warm air out of the case and draws cool air in from the opposite side. The option with the Noctua fans blowing across would also be alright I think.

Thanks a million

Hi, I'm still waiting for my Duet Wifi to reach my inbox, but I've already started tinkering on how I can install the board, so I ended up looking at this page, in particular, the section regarding cooling.

I'm hoping I can adapt the Ender 3 stock electronics box and I've designed a pair of mounting brackets, but I'm wondering if my solution will be good enough for cooling.

I've ended up with a couple of cooling options and I wish your input on which one to choose:

• a 60mm fan sucking air from the top of the stepper drivers (air flow directed outward)
• a 40mm x 10mm air blower (one of those used as part cooling) blowing air on the bottom from front to back of the board, via a flow guide (not drawn)
• two 40mm x 10mm fans (those used for hot end heat sink cooling) blowing from the opposite side where the drivers are located, positioned roughly 1/3 down, 2/3 up

I can also use the first solution mounting the board upside down (so sucking air from the bottom), but I'm not very happy with that as all the connectors will be inaccessible unless I unscrew the board from the brackets...

Also, consider the Ender 3 stock electronics box has plenty of vents on the bottom and has a 5mm gap from the rest surface.

Due to the very limited space inside the box, I'm unable to apply any combination of the above, the only viable combination would potentially be the underside blower and the stock 40mm fan from the top, both pulling air inside...

Which option would you suggest, if any is viable?

Does the firmware report the drivers' temperature so I can monitor my solution without risking of blowing the driver chips?

What is the suggested operating temperature for the drivers?

Must I design a totally new electronics box and ditch the stock one completely?