
PWM connection
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Re: PWM connection
Thanks Bertus,
It seems to be the z axis side that is not working, so I tried a new driver, still not go, so I have ordered a new Hat, only hope it is that and not the PI itself.
It seems to be the z axis side that is not working, so I tried a new driver, still not go, so I have ordered a new Hat, only hope it is that and not the PI itself.
-
- Site Admin
- Posts: 1521
- Joined: Wed Feb 03, 2016 10:26 pm
- Location: Wellington , New Zealand
- Contact:
Re: PWM connection
The Pi should be okay. Its only connected with the serial pins and if the Pi and the board can communicate it is still working.
Re: PWM connection
That's a relief Bertus.
Then it can only be the hat that is damaged, as I did try a new Driver.
Cheers
Then it can only be the hat that is damaged, as I did try a new Driver.
Cheers
Re: PWM connection
I know the original request for information was a while ago but here is my solution for a recent build using the hat. It works for 0 to 100%. First transistor does the 0 to 10 V conversion but is inverted the second transistor does the second inversion to make it right. The transistors are not critical just use a general purpose one reasonable gain. R2 should have a lower value if the PWM circuit in the spindle controller is low impedance (down to 3.3K or so). Similar circuit could be done with dual optoisolators to keep grounds isolated. I had to re-solder the spindle controller input connectors and I took a closer look at the board and I am suspicious of the quality and safety of these things...
David
David
Re: PWM connection
David better late than never I'd say, thanks very much for the circuit, I will give it a try. Thanks again Ernie 

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