PWM Water Pump Shootout

[tom91]

Already implemented here
https://github.com/Modellfan/Zombie-Sla ... ant_pump.h

This is interesting bit banging, can look at adding this in as a 100hz or 10hz pump PWM functionality that can use PWM channels or normal outputs.

[modellfan]

Some of this Pumps need an external pull-up to 5V. The script is running in my car. I didn’t wanted to interfere with other stuff in the firmware as PWM Pins can’t be accessed by gpio matrix. Open to do for me is still to also read in the PWM answer of the pump.

[Gregski]

the struggle is real

gents, for the life of me I just can't seem to be able to control the speed of any of these GS450h/Camry/Altima EV coolant pumps using this PWM controller, it's either full speed at 100% and 100 hertz or nothing

[tom91]

Some googling and I found this.

https://charm.li/Lexus/2011/GS%20450h%2 ... Diagnosis/

[Alibro]

Not sure if this helps any but I couldn't get a PWM controller to work with the Nissan Leaf pump and ended up using an Arduino to send a 2hz signal and changing the duty cycle controlled the speed of the pump.

All documented here
https://openinverter.org/forum/viewtopi ... 489#p50489

[arber333]

the struggle is real

gents, for the life of me I just can't seem to be able to control the speed of any of these GS450h/Camry/Altima EV coolant pumps using this PWM controller, it's either full speed at 100% and 100 hertz or nothing
....

You probably need a pullup resistor on output or another transistor to invert the signal...