AllInOne Homing <home to marker pulse>

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b432291
Posts: 5
Joined: Tue Jun 21, 2016 10:49 pm
Acorn CNC Controller: Yes
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AllInOne Homing <home to marker pulse>

Post 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?
cncsnw
Posts: 3763
Joined: Wed Mar 24, 2010 5:48 pm

Re: AllInOne Homing

Post 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.
b432291
Posts: 5
Joined: Tue Jun 21, 2016 10:49 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: Yes
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC11: Yes
CPU10 or CPU7: No

Re: AllInOne Homing

Post by b432291 »

martycncgarage, may want to add a note to your vid about that.
martyscncgarage
Posts: 9912
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Location: Mesa, AZ

Re: AllInOne Homing

Post 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
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