I am in the final stages of building a corexy printer using the Duet wifi board. I decided that I would rather use an air pump that a fan for part cooling, so I ordered a 24v berd-air pump. As usual, I skipped a few steps in my thinking and I am not sure how I can control the pump. I could probably order a PWM controller, but before I do that, I need to figure out if the PWM on the Duet board fan connectors can handle the 24v pump.
Has anyone used this pump with a duet board? Is it even possible to control the fan with the on board pwm fan connections? I probobly should have thought about these questions before buying the pump, huh?
Last Edit: Feb 7, 2019 20:30:01 GMT -5 by crchisholm
Do you know the version of the board? Duet increased the MOSFET for the output fan to handle the Berd-Air pump - but I don'e remember the board version.
Some things are meant to be closed. Your mind isn't one of them.
It would be the part cooling fan, not sure if it is Fan0 or Fan1
I ordered the 24v berd air to work with a new printer. According to Duet (@dc42) I can not control the device from the Duet WiFi fan ports as I thought I could. I looked at your websit and see that there is only a 12v PWM controller. Do you have any knowledge or experience that could offer me a good solution? I know I can run the pump off of the 24v p/s but would rather have some control over the speed.
It would be the part cooling fan, not sure if it is Fan0 or Fan1
I ordered the 24v berd air to work with a new printer. According to Duet (@dc42) I can not control the device from the Duet WiFi fan ports as I thought I could. I looked at your websit and see that there is only a 12v PWM controller. Do you have any knowledge or experience that could offer me a good solution? I know I can run the pump off of the 24v p/s but would rather have some control over the speed.
Post by bigwood247 on Nov 16, 2021 15:39:00 GMT -5
Change the pwm fan frequency from the stock 500 mhz to 25000mhz I can control the pumps airflow down to 30percent Or so hooked directly to the duet part cool fan output