Planning - Bridgeport Interact 1 linuxCNC Retrofit

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10 years 7 months ago #72194 by cncnoob1979
Thanks for the response guys.

No there is no load on them. Just going to the 7i77 analogs. PCW said the load from the 7i77 would be around 22k.

I'm fairly certain I had a bad pot. Guess we will see.

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10 years 7 months ago #72527 by bogie6040
Do you know the specs for the pots?? With a 5K value you are only dissipating 4.8 mA but multiply that by 24V for wattage and you get 115 milli-watts If your power supply varied by just 1 volt to 25V you would be at 120 mW which is very close to the common 1/8 Watt rated pots. You may want to consider switching to 1/4 or even 1/2 watt pots or changing the value to 10K for some extra operational safety margin.


Bogie

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10 years 6 months ago - 10 years 6 months ago #72551 by cncnoob1979
Hey bogie6040!

Yes the pots are 5k @ 1/2 watt.

I do believe I found my particular issue. The pots have a "nib" extended from the mounting base to prevent it from rotating when properly secured.

However since I was just temporary mounting these to a "test" panel I did not bother to cut out for the extrusion "nib" on the pot. So I snug down the pot, not real tight but apparently tight enough to have "warped" the pot's base enough to cause a direct short.

At least that is my conclusion... so user error yet again :)

Also, just for my piece of mind I installed a 30w regulated 1.3A / 24v DIN mounted power-supply [PS5R-C24]. So now my 24v system is regulated, I feel much better about that.



Also for those interested:

I’m finally up on Linux mint 17.3 Mate Desktop. I built from source LinuxCNC and installed Glade 3.8.5
LMDE 2 Gave my processor's GPU hangups and Jessie required a lot more "work" to become a full desktop. Wheezy truthfully was the best suited to run just as a controller for this mill. But you know hobbyist!

The hardware listed in this thread for this build has turned out to be AWESOME! :woohoo: Im around 5-7 in latency and its wicked fast, I would highly recommend this build to anyone wanting a stable platform for LinuxCNC. [comes with paraport too! V2 and up]
Last edit: 10 years 6 months ago by cncnoob1979.

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10 years 6 months ago #73266 by cncnoob1979
image missing http://i346.photobucket.com/albums/p431/swill008/2015-11/D07666ED-106B-4C3D-A213-42EBEB27391C.png_zpsnkrntzdq.jpeg

Planar PT1945R 19" LCD Touchscreen

Just picked up this used touch screen. It was a steal at 62.00$ shipped!!

I was wondering how difficult it would be to create a screen in axis just for gremlin view? And force it on a seperate monitor.

Has anyone tried this? I belive I can just create a VCP screen with just gremlin. Any thoughts on where to read up on that task? I'm reading the docs at the moment.

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