@klcjr89 said in Fans vs Berd-Air:

I'm running a brushless air pump I sourced on aliexpress that came with silencer mufflers, as the the 'berd-air' pumps are brushed motors.

Can you share its model or may be give a link to it?

@ockray83 You can just use F100 parament in M106 on the earlier firmware version to set the frequency. Currently, I'm not near my printers and can't try that.

Also, have to mention that previously, everybody suggested using F about 25500, but now Makerhive advises to set it extremely low. Hope that helps.

@dougal1957 said in Berd-Air - poor pwm response with ez switch:

@ockray83 have you tried adjusting the PWM Frequency in RRF I use a bird air system (have done for years) but I used a @dougal1957 on mine and don't have any issues. Check M950 Qnn parameter

Thanks, @dougal1957 for another lead. Looks like the power expander hasn't optoisolator as utilized in e-z switch controller. So maybe that's the main reason for such poor pwm control.

@dc42 That's great news. Thanks, David!
When do you plan to release it? an approximate date

Just saw on GitHub some edits for Smart Effector firmware with mentioning a HARDWARE VERSION 3. Does it mean that soon a newer version could be announced?

@ockray83 said in Berd-Air - poor pwm response with ez switch:

Update: makerhive got back to me and are sending me a new switch, they believe mine is defective. I should get it in a few days.

Just got the same problem... Did you already receive a new ezswitch from makerhive and did it really solve your issue?

@caijonas said in Acclerometer on a Delta printer:

Is it possible to eleminate more than one frequenzy? E.g. M593 P1 F30 F60?

Also interested in that... is it even possible, and will it be in 3.4 firmware?

@zapta Yes

@bearer Anyway, thanks for your help. I will try to sol that issue with the Arduino community. I think I'm missing something.

@bearer said in Controlling AC Aquarium pump:

Does the duration not change when you adjust the fan speed in DuetWebControl?

Yep, nothing changes when I try to adjust the fan speed in DWC.

If you set the fan frequency say 1000hz that should give you a peroid of 1000us, and the value of the fan speed in percent should be a factor of 10. I.e. 50% fan speed should give you 500us for the duration?

I have tried to change fan frequency by M106 p0 F1000, but that also didn't help. The serial monitor still shows the same duration readings between 6-7 .

7
6
7
7
7
7
7
6
6
7

@bearer said in Controlling AC Aquarium pump:

something like pulseIn()

I have tried pulseIn() in code bellow, Arduino D7 was connected to Duet FAN0-

int pin = 7;
unsigned long duration;

void setup() {
  Serial.begin(9600);
  pinMode(pin, INPUT_PULLUP);
}

void loop() {
  duration = pulseIn(pin, HIGH);
  Serial.println(duration);
}

But when I tried to change fan speed in DWC nothing happens.
Serial monitor always shows weird readings between 6 and 7.