Machsupport Forum

Third party software and hardware support forums. => SmoothStepper USB => Topic started by: Len-Tikular on April 10, 2015, 04:41:23 AM

Title: Slotted Opto Schematic
Post by: Len-Tikular on April 10, 2015, 04:41:23 AM

I need a schematic of how to wire in an Slotted Opto to read the pulses from my Spindle encoder disc.
I will use Smooth Stepper with Motion Control Break out board.

Can someone help please ?

George

Title: Re: Slotted Opto Schematic
Post by: Len-Tikular on April 11, 2015, 12:56:27 PM

Quote from: Len-Tikular on April 10, 2015, 04:41:23 AM

I need a schematic of how to wire in an Slotted Opto to read the pulses from my Spindle encoder disc.
I will use Smooth Stepper with Motion Control Break out board.

Can someone help please ?

George

Wot no helpers :-(

Title: Re: Slotted Opto Schematic
Post by: stirling on April 11, 2015, 01:23:23 PM

got a datasheet link for the opto?

Title: Re: Slotted Opto Schematic
Post by: Len-Tikular on April 11, 2015, 02:05:08 PM

Hi Stirling, PDF Attached.

Many thanks

George

Title: Re: Slotted Opto Schematic
Post by: stirling on April 12, 2015, 05:35:38 AM

Hi George - see attached. This assumes 5V signaling. This is about as simple as you can do it - see how you get on - but you may need the output shaping with something like a Schmitt trigger.

Title: Re: Slotted Opto Schematic
Post by: Len-Tikular on April 12, 2015, 11:51:08 AM

Thanks Stirling,

Here is the circuit associated with one of the input pins on the Motion control card.

If I'm correct, all the inputs have Schmdt trigger control, so by hooking up your opto circuit to one of the input pins should do the trick.
Is this arrangement correct.

I was confused because Arturo has a C3 index pulse board specifically for reading pulses from the spindle when threading on the lathe. I can only assume then that his Break out boards do not have the same Schmdt trigger arrangement on his input pins. Wrong or right ??

Thanks

George

Title: Re: Slotted Opto Schematic
Post by: stirling on April 12, 2015, 12:38:08 PM

Quote from: Len-Tikular on April 12, 2015, 11:51:08 AM

Thanks Stirling,

Here is the circuit associated with one of the input pins on the Motion control card.

If I'm correct, all the inputs have Schmdt trigger control, so by hooking up your opto circuit to one of the input pins should do the trick.
Is this arrangement correct.

I know nothing about that card but your diagram looks fine.

Quote from: Len-Tikular on April 12, 2015, 11:51:08 AM

I was confused because Arturo has a C3 index pulse board specifically for reading pulses from the spindle when threading on the lathe. I can only assume then that his Break out boards do not have the same Schmdt trigger arrangement on his input pins. Wrong or right ??

Can't help you there George because I know nothing of the C3 board.