Remember that current isn’t proportional to frame size.
Cla 2a logic pro x driver#
In round numbers, the M542 seems to be the basic driver for NEMA 17 / 23 /34 steppers.
Cla 2a logic pro x full#
Self-adjustment technology, full to half current self-adjustment when motors from work to standstill via switching off SW4.Improvements 3 Commentsīeing in the market for some more-or-less industrial stepper driver bricks, here’s a summary of what’s currently available on eBay from the usual vendors, copied-and-pasted directly from the descriptions with some fluff removed: M542 Stepper Driver Board Controller Took longer to take the pix and write this up than to finish the project… probably because there wasn’t a trace of CNC in sight. It’s captured by a thumbscrew in the bottom left corner (visible in the previous photo), so it can’t fall out. Working around the mount, one standoff at a time, avoided having to lay the monitor flat on the desk: VESA Mount – standoffs on monitorĪ bit of jiggling put the bracket on the standoffs, held in place by the 8-32 nuts: Lenovo Q150 VESA Mount on monitorĪnd then the Q150 snapped into place: Lenovo Q150 – on VESA Mount The other end had 8-32 studs that I cut down to fit inside the Q150’s dished mounting bracket: VESA Mount – standoffs One end had 4-40 tapped holes that I drilled out to clear the VESA mount’s M4x0.7 screws I sawed the heads off four M4 screws and epoxied them in place. The IBM (pre Lenovo) monitor it was now driving, however, had exposed screws on its VESA mount, so I adapted a quartet of hulking standoffs to hold the Q150 far enough away to clear the desk stand. It came with a VESA monitor mount bracket designed under the assumption that monitor manufacturers would provide an unused VESA socket and a completely separate desk stand mount, which turned out to be incorrect for all of the monitors in my collection. A permutation of our *cough* computing resources put the diminutive Lenovo Ideacentre Q150 flat on a desktop, where it was at risk of falling off due to the weight of the cables.