2012/4/16 Andrew <[email protected]>:
>
> I look from the top, like shown in manual. And pin 1 it's in the right
> bottom corner.
> I have different voltage at pin groups exactly according the manual. And I
> have 5V at left middle pin.
> By the way what is SENSEA and SENSEB inputs?

They are not used by 7i39, they are routed just right to the 50 pin
connector and are available on Your gpio pin. Basically You can put
some limit switch or something else there.
IIRC Peter had an idea for some potential use in future, so they
already gave the name for that, but I can be very wrong on this.
Anyway, sense pins are not used by 7i39 at the moment. I have a
adjusted firmware, where there are stepgen outputs on these 2 lines.
And it is working :)

Viesturs



>
>>
>> I'm anxious for you to get beyond this encoder problem, because
>> I'm eager to learn about driving linear motors from LinuxCNC and 7I43's.
>>
>
> That's not a big deal, I guess. At least I know that Andy and Viesturs had
> their encoders working. Maybe it's really a pinout, but I'm 99% sure it's
> not. Maybe just some incompatibility, though it's hard to believe too... RC
> + Shmitt can't break the signal too much. If I do not find a solution, I
> connect the encoder directly to 7i43
>
> I hope to be doing that myself in a few weeks, with some small linear
>> motors I'm building.
>>
>
> I should say I was surprised how simple are these motors. Just a rod with
> magnets inside, and several coils in the forcer. And this motor with
> 20x250mm rod and 40x40x90mm lenght forcer they sell for $500 or smth.
> Now I think about making them myself. So any details on this would be
> useful. Any links for your motors.
>
> Andrew
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