CNC lathe rev counter prototype prepared for motion

A contact extra work over the weekend for the rev counter right into a stable type that may be tried on the cnc lathe when it’s re-assembled.

Though some potential upgrades have been recognized, the software program is in a completely usable situation.

Discover different Engineer in Wonderland cnc stuff right here

Within the picture on the suitable, it’s sitting in ‘four-dashes’ to point the motor shouldn’t be shifting, then it’ll fortunately work as much as the three,500rpm top-end of the check motor, and all the way down to 1rpm.
Btw: there’s a purple distinction enhancement filter, however it was reflecting the window within the room and subsequently acquired eliminated for the picture.

It consists of the bonus PWM generator, that may be plumbed into the all-mains motor controller on the lathe through an opto-coupler (and a circuit that has but to be designed) for pace management.

The PWM generator at all times begins at 0% whatever the potentiometer place, and won’t ship extra % till the pot has been wound all the way down to zero – one other layer of safety to forestall the lathe from springing into rotation when it’s first powered-up.

Energy nonetheless comes through a USB cable, however will finally arrive from the machine’s 24V rail through a 7808 linear regulator.

Sarcastically, the primary foray into cnc right here in wonderland was an try and make pcbs, which has by no means absolutely occurred, and this meeting now wants a pcb to carry the regulator and some different ins and outs.