Messages

21

General Mach Discussion / Re: Need Encoder for threading

« on: June 29, 2012, 10:29:03 PM »

The only pins I have assigned are for the 3 steppers, the charge pump and the reset

I checked the Debounce settings and they were quite high.

I'm beginning to think I should run +5V to PIN 6.   After that I may run the sensor output directly to PIN 15.

Will I be able to tell if the INDEX input is working from the diagnostic screen
Jim

22

General Mach Discussion / Re: Need Encoder for threading

« on: June 29, 2012, 06:22:47 PM »

Hood;

Here is a link to the user manual.

http://campbelldesigns.net/files/breakout-user-guide-1-8.pdf

The ENCODER is J23 on page #4.   J23 is a 25 pin connector.   I was able to identify the PIN numbers by using another cable I happened to have on hand where the pins are numbered.

Bob Cambell told me to use a separate 5V power supply which I have done with a USB cable connected to the computer.    However, the input from the sensor is connected to PIN 5 which is optically connected to PIN15.   Going to the Mach3 "diagnostics window"  I see no change at the "INDEX" PIN 15 when I rotate the spindle past the sensor.

I doubt the PIN 15 input is working.    I did run a -5V wire to PIN 1 which should be GND.   Maybe that is a mistake?   Maybe a
+5V wire should be connected somewhere on J23?

I have verified the sensor is working but the computer does not see it as wired.

I think this is a simple fix for someone that has done this before.   Jim

23

General Mach Discussion / Re: Need Encoder for threading

« on: June 29, 2012, 05:51:16 AM »

Hood;

Yep, the 220 ohm resister is in the circuit.   I'm using a "Sound Logic Breakout board Plus" from Bob Cambell designs.
I also sent them an email with the same question.   He has been very helpful so far.

This breakout board is made for Mach2 and Mach3 users.
Thanks,  Jim

24

General Mach Discussion / Re: Need Encoder for threading

« on: June 28, 2012, 07:39:54 PM »

Hood;

I purchased 2 of those OPB 916B sensors to be used as an encoder for my lathe threading project.   I connected one of them up
to a 5VDC powersupply and got it working so I connected the second to my breakout board.    There does not seem to
be 5VDC between PIN #6 and PIN #1 or #2.   Seems like voltage should be there if the computer is turned ON.

I ran the spindle motor from the computer and still no voltage.

Any ideas?
Jim