Charge pump from Mesa 7i96 in 4+1 config?

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08 Jul 2020 19:19 #174012 by Zacharius
hello again,
@PCW i did connection with 74hc148 chip.
all to all there is some progress and i can see increment is changing.
issue i'm struggling with is that increments up to 0,5mm works well.
above 0,5mm gives a movement (on PC screen and LCD) of 0,6mm and no matter which one selected 1,2,5 or 10mm

also attaching hal. sorry it is a bit messy due to i'm trying to get all that together.

File Attachment:

File Name: my_LinuxCN...hine.hal
File Size:11 KB

may be you have some idea???
Attachments:

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08 Jul 2020 19:44 #174017 by PCW
Did you verify that jog-scale-xyz.out is giving the correct jog increment?

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08 Jul 2020 20:35 #174027 by Zacharius
yeah all aligned,
jog-scale xyz.out = mpg-scale-xyz = axis.x.jog.scale (same for Y and Z)

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08 Jul 2020 21:06 - 08 Jul 2020 21:08 #174029 by PCW
if the scale numbers and counts are correct, I'm not sure what's going on

It might be worth testing with just setp in halcmd to eliminate upstream issues:
(first comment out the hal connections to axis jog pins to allow manual setting them)

halcmd -fk
halcmd: setp axis.x.jog-scale 10
halcmd: setp axis.x.jog-enable true
halcmd: setp axis.x.jog-count 1 (assuming it was 0 at the start)

This works on my setup though that's 10 (imaginary) inches!
Last edit: 08 Jul 2020 21:08 by PCW.

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08 Jul 2020 21:16 #174030 by Zacharius
hmm, strange thing.
will take a closer look tomorrow, it's almost midnight here.
setp for jog scale was my starting point, i put that originally in hal equal 1mm and was ok.
could be something simple laying on the top

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08 Jul 2020 21:27 - 08 Jul 2020 21:27 #174033 by PCW
Is it possible the increment setting is not stable?
( does the 74HC148 have a pullup resistor added to each input? )
Last edit: 08 Jul 2020 21:27 by PCW.

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08 Jul 2020 21:40 #174035 by Zacharius
all inputs pulled to +3.3v pin from 7i73 via 1kohm, 74hc also powered by that.
7i73 inputs are rather stable essentially all looks good up to 0,5mm scale.
it could be some limitation or something else explaining why i can't go over 0,6mm
will also look for any relation in ini file tomorrow.

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09 Jul 2020 16:05 #174103 by Zacharius
aaand
i didn't found anything :/

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09 Jul 2020 16:30 #174107 by PCW
Can you halshow motions pins when you jog?
(jog-scale, jog-enable,jog-counts)

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09 Jul 2020 16:50 #174109 by Zacharius
ehm, probably suggestion to not to things during night have some sense.
was just about to show how it behaves and found all working as charm :woohoo:

have no idea why it didn't work yesterday :blush:
hal file above is accurate and i didn't change anything.

@PCW thank you so much!!
i'm half way there, next steps to think about keyboard connection and buttons assignment and next is improve information showed on LCD
:lol:

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