@dc42 said in Duet Wifi + Ender 3: cooling with stock electronics box:
@3dmntbighker said in Duet Wifi + Ender 3: cooling with stock electronics box:
I have a Pro with a Maestro. I just stuck a blower fan on top pulling air out around the driver area under the Duet. I drilled a hole in the top since the Pro has the vent on the bottom, and the board mounts upside down. My board NEVEr reports over 40C so far. So as DC says, you probably don't need a fan at all. The Ender doesn't tax the board.
The advice I gave was specifically for the Duet WiFi (or Duet Ethernet). The drivers on the Maestro get hotter than those on the WiFi/Ethernet, so I can't say that you don't need a fan for a Maestro driving an Ender 3. My guess is that if the currents are set to no more than 800mA then it may be OK without a fan.
Please note, the CPU temperature reported by the Duet needs to be calibrated before you rely on it. There is a wiki page about this.
Yeah, I have nothing over 800. And my board mount channels air past the driver area where my blower fan pulls the air out. Mine is probably over kill. As for calibration, I just watch the increase from ambient 😉 If it's 22 at power on and never exceeds 40 I'm pretty sure I'm good.