Messages

51

General Mach Discussion / Home switches giving Estop

« on: September 05, 2011, 03:06:20 PM »

I have finally got round to putting home switches on my machine, but have a problem with the X and Y axes activating the Estop rather than homing. The Z axis seems fine and both the X and Y axes light up the led's on the diagnostics page. The actual Estop also works fine. Any body got a clue whats happening?

52

General Mach Discussion / Re: Noisy Steppers when stationary

« on: August 17, 2011, 03:09:12 AM »

Thanks Rich you were spot on, all is now good.

53

General Mach Discussion / Re: Noisy Steppers when stationary

« on: August 15, 2011, 08:12:21 AM »

Makes perfect sence, thanks, I will let you know if you are right.

54

General Mach Discussion / Re: Noisy Steppers when stationary

« on: August 15, 2011, 05:41:55 AM »

Ok, I will have to do that tonight, as I am at the office now.

55

General Mach Discussion / Noisy Steppers when stationary

« on: August 15, 2011, 04:36:30 AM »

Just got my little router put together and it works really well, but the steppers are very noisy when stationary . There are no issues with torque, accuracy, speed, or temperature, they really work well, but if there is a way to quiet them down I would be even happier .
Can any one help?

56

General Mach Discussion / Re: Stepper driver chips

« on: January 25, 2011, 04:29:58 AM »

Thanks Tweakie

57

General Mach Discussion / Re: Stepper driver chips

« on: January 25, 2011, 02:40:59 AM »

I have a schematic for a driver which I got out of a CNC Robotics book, but I am not convinced it is the best one for running a CNC.
Does anyone have a good design that they wouldnt mind sharing. I would like ideally to micro step. I am really new at this electronic stuff, but am learning fast!

58

General Mach Discussion / Re: Stepper driver chips

« on: January 25, 2011, 02:31:05 AM »

Thanks very much, that is very usefull information.

59

General Mach Discussion / Stepper driver chips

« on: January 24, 2011, 06:46:03 AM »

Hi there,
Can anyone tell me the difference between the L 293 chip and the PBL 3717 chip? And are they interchangable?
Thanks
Tony

60

General Mach Discussion / Re: Stepper moving in one dirrection only

« on: January 22, 2011, 10:14:26 AM »

Ok, I will try that. Thanks to both of you, you have been a big help.