All Questions
5 questions
2
votes
1
answer
144
views
Identifying unmarked IC in CNC controller board
I have a Camxtool v3.5 CNC controller (similar to this, although this is v3.4) that has an unmarked IC that I haven't been able to identify:
The IC is connected between pin PB3 of the ATmega328P (...
- 89
2
votes
0
answers
251
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Adding PWM function to a XL Semi XL4015 5 A 180 kHz 36 V buck DC to DC converter to create a NUBM44 laser driver board
I am asking this question just to make sure I haven't missed anything important because I am at best a novice when it comes to electrical engineering. What I am trying to do is build a laser driver ...
- 21
0
votes
1
answer
550
views
PWM to voltage for servo control
I have Chinese "no name" servo drives with following inputs for speed and torque mode:
I have got a MESA 6I25 card and want to use LinuxCNC as a controller. I want to design a BOB (break ...
- 93
1
vote
1
answer
220
views
Two pin PWM signal to control solenoid/electromagnet
I am building a whiteboard CNC pen plotter for my classroom out of some old 3D printer parts, a Melzi board running Ramps 0.92 and Inkscape to generate the Gcode. I have the machine up and running but ...
- 11
0
votes
2
answers
1k
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Repair help. Mosfet keep shorting
I have "repaired" a cnc power nad speed control board from yoocnc (china) and it worked fine for a day. the next day the spindle just started running as power was applied. the mosfet was shorted, the ...
- 103