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| Another 4" CNC rotary table |
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| tumutbound:
It's probably a little late seeing you've already bought your stepper driver but ... The annual Gecko sale is on so you can pick up a G251 driver for $US49. It would easily fit in your existing enclosure. |
| kwackers:
Looking good. Have you checked it changes direction if you press the opposite direction? (About all that's left to go wrong - mechanics excepted). I doubt the driver will get that hot, if possible I'd build it into the box (mainly because I like stuff like that as self contained as possible). Try running it for a bit and see how warm it gets. |
| j45on:
tumutbound if I did not have one I would consider that :thumbup: kwackers I will check tomorrow I think I had the motor going both ways actually I'm sure I did as I increased the backlash compensation to see what it did and it was noticeable in one direction and that only affects one direction right ? I was thinking about cutting out the back of the box so that the driver heat sink could poke through and seal it up with a bit of silicone but after playing around today the only thing that got warm slightly was the motor |
| j45on:
Got some aluminium tube today for the stepper motor mount I'm thinking about machining the ends that fit the motor and table out of separate pieces and threading them into the tube and securing them with locktite I found this while browsing another site it's a 20x4 character LCD with extra large digits ( great if you have poor eye sight ) Would not fit the controler pcb but may be of use to someone http://www.mcustore.com/displays-i-o-boards/56-20x4-large-digit-character-lcd.html |
| cidrontmg:
Hi j45on, others, I´m also building one of these, got finally all the electronic components, still missing the stepper + mechanicals. I will mount the electronics to an Eddystone cast ali box, looks like this. The keypad has ready printed symbols, so it won´t look nearly as nice as yours. But I guess I can live with those. The bombproof box is so far otherwise empty. I´ll use stripboard and solder some components during the weekend. :wave: |
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