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USB SS output voltage
« on: March 12, 2016, 12:53:26 PM »
I have a USB SS plugged into a CNC4PC C23 board.  It has never been hooked up to any devise.  I found that everything on the C23 works EXCEPT for the X axis step (pin 1 output) while inputting manually through Mach3 or the direction keys on the keyboard.  I finally sent the C23 back to CNC4PC and just got it back.  I haven't heard back from Arturo yet whether a fault was found or not but I am getting the same symptoms as before. 

I have pin 1 port 1 assigned to the X step.  Measuring the voltage on the SS pin 1 delivers 0.87v  while the step pins for Y and X axis deliver 1.125v. 

My question;  what is the output voltage of the SS supposed to be and could this be the issue with the X step not functioning?

Are my pin assignments incorrect?

I exchanged quite a few emails with Arturo before sending the C23 back for him to test.

Thanks for any insight.

Offline Tweakie.CNC

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Re: USB SS output voltage
« Reply #1 on: March 13, 2016, 03:25:20 AM »
It does not answer your question but it is usual to ignore Pin1. The motor outputs are usually set as X Step & Dir 2-3,  Y 4-5,  Z 6-7,  A 8-9

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.
Re: USB SS output voltage
« Reply #2 on: March 13, 2016, 09:14:56 AM »
Thanks, Tweakie.  You made me examine the C23 board more closely.  I was drawn to the arrangement of the LED indicators on the C23 as they are paired on the board... 1,2 - 3,4 -5,6, etc.  It confused my wee brain.  Sometimes you can't see the forest...

Pin assignments are shifted and I can now begin laying pathways for the herds of electrons to invade unsuspecting, far off stepper controllers.

Cheers!

Offline Tweakie.CNC

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Re: USB SS output voltage
« Reply #3 on: March 13, 2016, 09:17:34 AM »
 :)

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.