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Gavinmc42
Posts: 3630
Joined: Wed Aug 28, 2013 3:31 am

Re: interface with digital calipers

Sun Apr 14, 2019 12:11 am

My CNCing predate Pi's but I can relate to the drilling caliper issue.
I got one of those AA battery holders and wired that in, no more silly button cell going flat.
That first AA lasted for years ;)
Want to get back to CNCing so I can make casesfor all these PI's that seem to breed.
I'm dancing on Rainbows.
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JohnsUPS
Posts: 110
Joined: Fri Jul 06, 2018 2:13 am
Location: USA

Re: interface with digital calipers

Mon Apr 15, 2019 1:59 am

perfo wrote: I like the look of that.
An RPI with a big monitor and some extra functionality like relative positions etc would finish it off .. Oh and maybe a box or tow but then half my stuff never actually makes it in to a proper housing...
In the finished Arduino version, there are buttons to set each caliper readout to zero for indexing purposes.
Yeah, boxes are a good idea, especially when your fly cutter is sending metal pieces flying in every direction. If one lands in the wrong place, the magic smoke may get loose ;)
Gavinmc42 wrote: My CNCing predate Pi's but I can relate to the drilling caliper issue.
I got one of those AA battery holders and wired that in, no more silly button cell going flat.
That first AA lasted for years ;)
Want to get back to CNCing so I can make cases for all these PI's that seem to breed.
I ought to do that - with the almost non-existent caliper current consumption, an AA battery is a practical solution.
I ruined a handful of those "titanium" coated drill bits trying to drill the stainless before getting cobalt. A Dremel cutoff disk took care of the rest.

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perfo
Posts: 92
Joined: Mon Jan 30, 2012 2:42 am

Re: interface with digital calipers

Mon Apr 15, 2019 8:47 am

I find it handy to have absolute positions (relative to end stops) and relative positions but with the RPI and big screen you can have as many as you like...

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