electronic lead screw

Hi Bob, I think he is gunna need extra display for add ons.
Did u have to alter his files to invert the step or enable lines?
 
With some careful layout, he should be able to increase functionality with the existing display. I would use the power button to step through various functions. For each function, the other buttons could be redefined. For example, if you wanted to set the left stop, push the button repeatedly until left stop was displayed then use the + and - buttons to set the value for that position. Then move to the next function. The settings button could be used to toggle as well. There are a lot of possible combinations with 8 buttons. Even more if you can decode two buttons pressed simultaneously. Think of how keyboard functions are altered by pressing Ctrl , Shift, and Alt.

As to the Clough firmware settings, according to post #'s 124 and 126 in this thread, I have STEP and DIR active high and EN and ALARM active low. ALARM may be wrong since I see no effect on the display when the driver faults.
 
RJSakowski said:
With some careful layout, he should be able to increase functionality with the existing display. I would use the power button to step through various functions. For each function, the other buttons could be redefined. For example, if you wanted to set the left stop, push the button repeatedly until left stop was displayed then use the + and - buttons to set the value for that position. Then move to the next function. The settings button could be used to toggle as well. There are a lot of possible combinations with 8 buttons. Even more if you can decode two buttons pressed simultaneously. Think of how keyboard functions are altered by pressing Ctrl , Shift, and Alt.

As to the Clough firmware settings, according to post #'s 124 and 126 in this thread, I have STEP and DIR active high and EN and ALARM active low. ALARM may be wrong since I see no effect on the display when the driver faults.
Click to expand...
Hi Bob!!
& For those interested: Non inverted steps are avail at pin "0" at J6/J8 connector on his "Boost" board.. Inverted is supplied from the (green) connector, the inversion happening via the simple transistor/buffer on his board.
Its probably best to either alter the f/w, or, buy a flexible stepper driver, or insert another buffer to provide a non inverted outpu, if needed.
A non buffered output that leaves the board would be completely unprotected.

Unfortunately , for my setup, the sense of the step signal is not the issue, rather, it is reaching the top speeds of his thread/ feed settings.
The only way to avoid the stalling, so far, is to increase the microstepping rate on the driver to 1600, a scenario i wanted to avoid with the associated loss of torque.
BTW,
I do hope Jon, AKA, Briney Eye comes back on-board - would be a real shame to not see the conclusions of all his hard work.
I haven't found ANY other ELS with a touch screen!

Bob, the Stalling, as above, went away when I fitted the cog / gear required to drive the change gears/Norton gearbox/lead screw.
Its mass must be acting as a mechanical damper, so no problems now with top speed.
The CL57Y closed loop driver will be despatched as soon as Chinese NY ends, early Feb., so should be able to deliver the full 5 Amps that my stepper is capable of, hopefully torque should improve considerably up from my existing driver (3Amps max).
 
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As I said, i didn't read the thread. I'm not intrested in an electronic lead screw but saw the topic and wanted to help the OP if possible. I watched the development of this one on youtube and liked how clough42 was doing his version.
 
It is a long thread and Clough42's effort has been the reason for a number of us implementing his design.
 
Mine (well, Clough42's) has been up and running for a few weeks. I've already used it a few times and, like having VFD speed control), it's very convenient for feed rates, never mind threading.
 
I'm digging into grblHAL to see if I can have a nicer jogging experience and eventually get G76 working. If G76 works out my thinking is that grbl could be dumbed down into a nice ELS. The benefit is that you could have the dumbed down mode for manual or semi-manual(threading, z fine feedrate control) operation and full CNC when you need it.

This shifts quite a lot of the work to your physical controls which could be customized easily. You can see his lathe MPG here:
IMG_8515.jpg


I'm working on making a "toy" lathe mockup to do my testing on.
 
greenail said:
I'm digging into grblHAL to see if I can have a nicer jogging experience and eventually get G76 working. If G76 works out my thinking is that grbl could be dumbed down into a nice ELS. The benefit is that you could have the dumbed down mode for manual or semi-manual(threading, z fine feedrate control) operation and full CNC when you need it.

This shifts quite a lot of the work to your physical controls which could be customized easily. You can see his lathe MPG here:
IMG_8515.jpg


I'm working on making a "toy" lathe mockup to do my testing on.
Click to expand...
Far out! Thats super cool, but u got me: i must have missed something, who is ''his' lathe'' ? Is there a link to the owner of this lovely beast?
 
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