diy pic16f88 cnc servo motor drive 32 bit pid

[hoecken]

ahsameh: Is there more info, I would like to build my own servodrivers.

[James Newton]

If you want an open source PID servo controller, which is also available as a very low cost kit, this one is released, tested, and works:
BOBPID1: PID Servo Controller massmind

[SEK22Hornet]

I don't know if anyone is still doing anything on this but this looks pretty interesting. My only problem is the lack of an H bridge that would support a 90 volt servo with a 120 volt input - has any seen something like this that would work with this board? I'd love to look at using these and an Acorn board to retrofit a mill that I have -

[James Newton]

I don't know if anyone is still doing anything on this but this looks pretty interesting. My only problem is the lack of an H bridge that would support a 90 volt servo with a 120 volt input - has any seen something like this that would work with this board? I'd love to look at using these and an Acorn board to retrofit a mill that I have -

Best I can do is 40 volts:
DRV8701: 1HP DC Motor H-Bridge Driver massmind

But the BOB PID can run any H-Bridge that supports a PWM and Direction input.
BOBPID1: PID Servo Controller massmind
And can be modified to give 0-10 volt output signal in place of PWM.

A modification to support +/- 10 volt signaling is in the works, as is ENC / RC output. It's all open source, but the repo isn't up to date so talk to me if you want to make changes.

[Al_The_Man]

I don't know if anyone is still doing anything on this but this looks pretty interesting. My only problem is the lack of an H bridge that would support a 90 volt servo with a 120 volt input - has any seen something like this that would work with this board? I'd love to look at using these and an Acorn board to retrofit a mill that I have -

I made a120vdc H-bridge based on Tahmids iR2110 Tahmid's blog: Using the high-low side driver IR2110 - explanation and plenty of example circuits you just need to size the Mosfets accordingly.
Al.

[SEK22Hornet]

was hoping to find something that didn't require a pcb layout - but the article looks pretty good. Right now in the middle of getting my new old Partner 1 Milltronics VM-17 up and running so this will go on the back burner.

[James Newton]

Hey Al, do you have a sense of what the component cost was for that driver? I'd be interested in making a kit available if the price could be made reasonable.

[Al_The_Man]

I would have to look up my old Digikey invoices, I used a Pic 18F23K22 and communicated with RS485 serial Modbus type interface.
120vac mains powered with isolation for the 5v logic.
Al.