Originally Posted by
Ladi268
Hello again guys,
right now I am quite (no, not quite, really) happy with the results. After all the mods I am running my machine with 600 mm/s with 1.25 mm pitch lead screws (regular M8 stainless steel screws) in half step mode.
Maybe I'll give full step a try tomorrow - since I have only 1.25 mm pitch the accuracy in theory is still better then I'll expect in reality. My machine is a proof of concept for me and is completely made of wood with drawer guides on each axis and still it was accurate to 0.15 mm on a test run this evening. That was more then I expected. OK, for some 0.15 mm might be far off, but regarding woodworking 0.15 is nothing.
@petsat: if I understood your power up/down circuit correctly you are giving the board approx. 12 V for 2 seconds and then you go up to 24 V. What would be the difference if I adjust my lab PSU down to 12 V and then turn it up to 24 V after some seconds? Since it is only me working on that "Proof of concept" I can live with that as well - during the last few days I always turned it down to 11 or 12 V before shutdown and the next time when I turn the PSU on it starts again with the 12 V. Is that safe as well in your opinion or should I get my soldering iron out again :-).
Cheers and again thank you very much guys,
Juergen