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AllInOne Homing <home to marker pulse>
Posted: Sun Feb 18, 2018 1:33 am
by b432291
CNCMARTY did a neat trick in a Acorn where he used a once-per-rev encoder pulse to super-accurate home his machine using the M105 command in the .hom file:
https://www.youtube.com/watch?v=l1xUtRwN6T0
I was looking to implement this on my AllInOne Bridgeport, but what P values would I use for the X, Y, & Z once-per-rev encoder pulses?
Re: AllInOne Homing
Posted: Sun Feb 18, 2018 2:10 pm
by cncsnw
The closed-loop control systems always use the encoder index pulse for this purpose.
Just home using M91 or M92.
No special wiring is required.
Re: AllInOne Homing
Posted: Sun Feb 18, 2018 8:49 pm
by b432291
martycncgarage, may want to add a note to your vid about that.
Re: AllInOne Homing
Posted: Mon Mar 19, 2018 9:44 am
by martyscncgarage
b432291 wrote: ↑Sun Feb 18, 2018 8:49 pm
martycncgarage, may want to add a note to your vid about that.
If you are using the All in One DC, (or OAK) then this is standard practice as CNCSNW mentioned.
All in one and Acorn are two different controls entirely. Acorn is open loop. We are just taking the index pulse into an input and having the control watch for it to give Acorn controlled machines using a drive that can provide the index pulse the ability of precise Axis homing.
Marty