Probe Interface Board Design (resistance switching)
- yrsiddhapura
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27 Feb 2024 19:33 #294629
by yrsiddhapura
Replied by yrsiddhapura on topic Probe Interface Board Design (resistance switching)
could you please share schematic and Gerber files cant wait to try on mine omp60 i just find mine probe will share pics once assemble it.
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29 Feb 2024 20:25 #294799
by fletch
Replied by fletch on topic Probe Interface Board Design (resistance switching)
Hi Yagnesh
Yes, I will share all the schematic and gerbers on github - although I have a few spare v1.0 PCBs but I haven't yet tested on the CNC - still have to print a case to avoid shorting on all the chips.
Talking of pictures, here's the first one fully soldered without releasing any blue smoke (paired, obviously, with a Mostly Printed Probe).
Philip
Yes, I will share all the schematic and gerbers on github - although I have a few spare v1.0 PCBs but I haven't yet tested on the CNC - still have to print a case to avoid shorting on all the chips.
Talking of pictures, here's the first one fully soldered without releasing any blue smoke (paired, obviously, with a Mostly Printed Probe).
Philip
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01 Mar 2024 23:20 #294871
by vre
if you find solution how to operate it without receiver please tell me.
Replied by vre on topic Probe Interface Board Design (resistance switching)
I have also an omp60 without receiving unit..could you please share schematic and Gerber files cant wait to try on mine omp60 i just find mine probe will share pics once assemble it.
if you find solution how to operate it without receiver please tell me.
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06 Mar 2024 15:04 #295328
by yrsiddhapura
Replied by yrsiddhapura on topic Probe Interface Board Design (resistance switching)
Well i am planing to use it as wired probe with fletch's interface board as i am gone use it on a HBM machine which doesn't an ATC so for me its not important whether its wired or wireless.
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17 Apr 2024 09:16 - 17 Apr 2024 14:30 #298425
by fletch
Replied by fletch on topic Probe Interface Board Design (resistance switching)
After a bit of a delay (for reasons), I'm now back to testing the populated board on my machine rather than the bench. Although I've yet to do the micrometer test, it appears to work - it is, as expected, quite sensitive to electrical noise. For me, this only occurs when turning off the mist relay but as I found out over the weekend, this will stop a running job!
I may be able to tune is out but I'd also like to disable the probe input in hal when the probe tool is not inserted (to also prevent the spindle from being turned on) - I've not yet found out how to do this, so will likely create a separate forum thread...
Edit: Scratch that. Solved with a big ol' flyback diode across the solenoid contacts (which I thought it already had on the tiny PCB next to the contacts)...
If anyone would like a v1 PCB, I'd be happy to send you one for the cost of the postage.
I may be able to tune is out but I'd also like to disable the probe input in hal when the probe tool is not inserted (to also prevent the spindle from being turned on) - I've not yet found out how to do this, so will likely create a separate forum thread...
Edit: Scratch that. Solved with a big ol' flyback diode across the solenoid contacts (which I thought it already had on the tiny PCB next to the contacts)...
If anyone would like a v1 PCB, I'd be happy to send you one for the cost of the postage.
Last edit: 17 Apr 2024 14:30 by fletch.
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17 Apr 2024 18:27 #298479
by Mecanix
Replied by Mecanix on topic Probe Interface Board Design (resistance switching)
Prolly easier to just dump schematic & bom. Bet a few here could improve it where it needs and if it needs. Happy to assemble one myself and give it a trial, got 6 weeks off starting mid-may~end-june...
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17 Apr 2024 19:56 #298485
by fletch
github.com/Stutchbury/CNCProbeInterface/tree/main/docs
I think "if it needs" might be a bit optimistic It works well so far but I completely forgot about an 'enable' option and there may be better ways to do certain things.
Not sure PMs work here but my email address is on my github page.
Replied by fletch on topic Probe Interface Board Design (resistance switching)
S'funny you should suggest that cos I've just pushed the schematic and BOM to github:Prolly easier to just dump schematic & bom. Bet a few here could improve it where it needs and if it needs.
Happy to assemble one myself and give it a trial, got 6 weeks off starting mid-may~end-june...
github.com/Stutchbury/CNCProbeInterface/tree/main/docs
I think "if it needs" might be a bit optimistic It works well so far but I completely forgot about an 'enable' option and there may be better ways to do certain things.
Not sure PMs work here but my email address is on my github page.
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17 Apr 2024 20:10 #298487
by fletch
Replied by fletch on topic Probe Interface Board Design (resistance switching)
I've also just uploaded the case and din rail mount (my first print-in-place design).
github.com/Stutchbury/CNCProbeInterface/tree/main/stl
Enjoy
github.com/Stutchbury/CNCProbeInterface/tree/main/stl
Enjoy
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17 Apr 2024 21:25 #298496
by Mecanix
Replied by Mecanix on topic Probe Interface Board Design (resistance switching)
Oh christ who came up with this springy pcb clippy idea? that's just so brilliant (and useful)!!!
Placing the monthly passives and components order this coming week. I'll swing in what's needed in that lot. Nice work man
Placing the monthly passives and components order this coming week. I'll swing in what's needed in that lot. Nice work man
The following user(s) said Thank You: fletch
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18 Apr 2024 18:38 #298569
by fletch
Quick update: I did some more testing today with my new improved Renishaw mount, complete with magnetic connector:
and am very happy with the results:
My test 'hole' is exactly 20mm (I always thought they were never exact, but this one is bang on the money) so to be between just 8-35 thousandths of a millimetre off makes all the effort worthwhile. Repeatability of less than a few thousandths is good too.
I'm sure if I wasn't using a 21 year old probe it would be even better but the ability to 'tune' the resistance of the knackered contacts was very useful.
Replied by fletch on topic Probe Interface Board Design (resistance switching)
Thank you - the design is mine but based on something I saw a year ago with a single 'spring' but now, of course, can't find - so I can't take all the credit.Oh christ who came up with this springy pcb clippy idea? that's just so brilliant (and useful)!!!
Placing the monthly passives and components order this coming week. I'll swing in what's needed in that lot. Nice work man
Quick update: I did some more testing today with my new improved Renishaw mount, complete with magnetic connector:
and am very happy with the results:
My test 'hole' is exactly 20mm (I always thought they were never exact, but this one is bang on the money) so to be between just 8-35 thousandths of a millimetre off makes all the effort worthwhile. Repeatability of less than a few thousandths is good too.
I'm sure if I wasn't using a 21 year old probe it would be even better but the ability to 'tune' the resistance of the knackered contacts was very useful.
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The following user(s) said Thank You: yrsiddhapura
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