Thanks for the extra info. Jerry. My limit switches are industrial micro-switches (I always have a few around for my real work) and they are a little coarse in...
Hi, David: I would look at the limit switch code, not the G92 code. The G92 code sets your current location to whatever coordinate you specify... i.e. G92 X3...
Hi Jerry, Seems like this is the David thread. If I understand, it sounds like I could raise my Z till it hit a switch. set that axis with a G92 to be 0.0...
How do I check the driver for pulse width? ... speed. ... not ... axis ... things ... power ... software ... 45ipm ... my ... Sold ... board. I ... up. ... you...
It should be specified. If it's not, figure between 10 and 30 microseconds should work. As long as you're above some lower limit, the actual pulse width is not...
Thanks to Dave. There are 3 sources I have found so far. I have not read any of these books or plans. #1, Dan has plans on his site, and photos. and would...
I want to reply this message again to Jerry or Dave. Because it happened to someone else. could it be a bug or is it just something you shouldnt do.(turn off...
... revised ... anywhere. ... The cheapest place for this is OKDPM, but the page count is wrong. it is the 56 page book, not 125 pages. copywite 1997. They...
Hi all, I have just registered/started using Dave K's brilliant Turbocnc so forgive my obvious questions. Once i had set up my steppers all appeared ok except...
I typically turn it all on and off as a unit. I bought one of those under monitor surge protectors that allows me to switch on or off any of 5 units. this is...
Dave, ... I do it same, BUT: I know several drivers (especially non-industry-produced) that will smoke short if they powered before the signals on the port are...
Sounds like a time delay relay would be intrisic in the power supply sectin of such a driver. I think I would go so far as to accept the 5vdc power from teh...
Hi, Nick: You didn't mention which version of TurboCNC you're using. If you're using one of the earlier versions - I believe somewhere around 3.0g or earlier...
Hi all, seems there has been a number of posts that do not have accurate subject lines. This poses a real problem when you want to search the archives for a ...
Hi Jerry, Aah, the penny drops! In my case I require an override switch as the Geckos are disabled by the "over-limit" switches. Being pedantic, my first limit...
Hi, David: And why would you have to connect the limit to the Gecko drive? Why not connect it to one of the printer port pins and let TurboCNC handle it? --...
... That's a secondary limit switch. If something happens and the first interrupter isn't caught, turning off Gecko power is a LOT better than coming back to a...
Spot on! 'got the teeshirt for this one. David ... From: "cybermace5" <cybermace5@...> To: <turbocnc@yahoogroups.com> Sent: Wednesday, April 02, 2003...
Over on the Master5 (Mach1) list an nice idea for a lathe spindle encoder was mentioned. It is repeated below: The latching sensor seems to me to be a great...
My strong advice (and what I do) would be to only apply power to the driver board(s) once TCNC has started and initialised the parallel port. Same switching...
Dave K is aware of this already. I suggested it back a few months ago. Double the resolution by using a 180° encoder wheel and counting both transitions Hi-Lo...
Hi, Mark: I'm assuming that your test using Fkeybit was done by manually moving the spindle to the "on" position and checking the output and then moving the ...
Mark: Yes, I haven't forgotten you. There's no reason yet that I can find for this to occur. Regarding noisy transitions, there's a test for that in the ...
Jerry is exactly right. A Schmitt trigger takes care of this nicely. See my posting a few days ago for information on Omron optical sensors (both reflective & ...
Hi EZ In testing TCNC on my foam cutter I have found that it hesitates between moves when you have a speed override of about 90% or 70%. Could it be that your...
Hi Jerry, thanks for the reply, currently i am using version F as i only have access to an old 486sx33 laptop at the moment ( i did have an old p100 but the...
Thanks for the quick answers Jerry, Dave and David. I don't have the encoder installed yet. It was tested by powering it up and then just using a a bit of...
Thanks Dave, I will connect up the controller to this PC and boot from a floppy. In your release notes you mention that the M50 should show the RPM. Could the...
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