ClearPath Servo Motors Testing - So far so good
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A word to the wise having built several Clearpath retrofits for CNC machines...Buy the Clearpath official power supply (or two if you need them) - to correctly power your motors. Cheesing out on the power supply with these motors will result in chasing your tail, pointing fingers in the wrong direction and a host of other problems that will cost you more than just buying the right kit to begin with. (I say this from 1st hand experience). They're not 'cheap' but they're what you need to do it right.
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@BDubs Thank you very much for this advice.
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@Mirage - You got it. They're pretty impressive motors. If you spend a few more dollars for the 6400 CPR ones, it's worth it.
3 to 5:1 reduction on them (unless running a screw) is also advised to gain some mechanical resolution....which is always preferable to 'electronic resolution'. The Duet should have more than enough 'pulsestream' to go as fast as you'd want to go with them.
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@Mirage, looking and your design page, it seems that you are addressing all the things I wanted to improve on my HEVO (which serves me well otherwise). That's very impressive and I will definitely follow up.
If it's ok with the mods be useful to start here a thread to follow up progress of your project.
I wonder what extruder you have in mind. For me a direct extruder is a 'must' but it seems that your design will be able to move it fast and accurantly.
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Have you tried using the "RAS"/Regressive Auto Spline feature in the ClearPath Servos? Did is mess with pressure advance or extruder timing?
At low speeds it might not be noticable (@ 100mm/s, 25ms is 2.5mm). But where you plan to run the HevORT, the machine covers 25mm in 25ms.
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Hi!
I'm converting an old Therwood machine into a 3D printer with a Typhoon head / ClearPath motors.
Would it be possible to make the 5V change at the ribbon cable going into the expansion board?
Cut 3 and 43 and connect them to pin 1 (5V) ? Thereby running the exansion board at 5V? Are the ICs on the exp board 5V tolerant and would that config work with clearpath SDHP motors? Or Shall I simply do the above and wire 3 servos to the 5V heater pin?
