Actuator (Pump) Question - 2 Vacuum Pumps

[jbasia]

I am now in calibration stage. Here comes the next question:

My machine has two vacuum pumps, one for each nozzle. But looks like the Head (H1) can only  assign a single pump. 

Really wanting to do the N1/N2 confetti calibration today I did a workaround with a boolean setting for VAC1 (solenoid valve):

M42 P38 S{True:255}{False:0} ; vacuum pump 1
M42 P{Index} S{True:255}{False:0} ; valve nozzle 1

Seem to work fine. Calibration was done. Is that the proper way?

[Ian Arkver]

Turning the pumps on and off for every valve actuation seems unnecessary and possibly slow. You might have to wait longer while the pump/vacuum ramps up, especially for picking something heavier than confetti.

It might be better to use the head pump setting but assign both lines of gcode to the actuator it controls, so that both pumps are turned on and off together with the head control. Or else just wire them together.

Regards,
Ian

[jbasia]

Thanks, that would work too. I think in the original design both pumps are constantly ON. I like to keep noise pollution low, but will try that method too.

[mark maker]

Ian is correct, and using the different Pump Control methods will give you some options to reduce noise.

https://github.com/openpnp/openpnp/wiki/Setup-and-Calibration_Vacuum-Setup#pump-control-setup

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