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Author Topic: 25 Pin Parallel Signal Tester with LED's for each pin WANTED  (Read 5240 times)

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Re: 25 Pin Parallel Signal Tester with LED's for each pin WANTED
« Reply #10 on: August 04, 2009, 09:29:52 PM »
Sorry Hood... On the CW CCW I meant how does it look different than a G01 (line). Does a CW CCW pulse use a different parallel port pin? I have a really old system I am having to reverse engineer. No real good schematics.

Offline Chip

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Re: 25 Pin Parallel Signal Tester with LED's for each pin WANTED
« Reply #11 on: August 04, 2009, 10:26:29 PM »
Hi, Steve

Direction is controlled with the dir. pin being ether held high or low on each axis then the step pin is pulsed to move the axis the desired amount.

3 axises 6 pins and common Ground.

Chip

Offline simpson36

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Re: 25 Pin Parallel Signal Tester with LED's for each pin WANTED
« Reply #12 on: August 05, 2009, 07:56:55 AM »
I have 2 parallel ports. How do you read both? I guess 1 at a time?


Note that I said ONE OF my BOBs. I also have one of Peter Homann's new BOBs, but it does not have LEDs . . . . consequently it is very small . . . so advantages are traded.  For two ports, you need two BOBs.

One exception I am aware of is a product called 'smooth stepper'. There is a section on this forum dedicated to the product. I don't know much about it, but apparently (among other advantages) it replaces two parallel ports with a USB connection.