Am 20.08.2010 18:55, schrieb Jon Elson:
> dambacher-retrofit.de wrote:
>> Do you know if there is something similar for old philips glass scales?
>>   
> If these are analog scales of sufficient basic resolution, a comparator 
> chip can be set up pretty easily to convert sine-wave scales to 
> digital.  Basically, they compare each signal to a set threshold, and if 
> above it outputs a "1", if below, it gives a "0".
Hi Jon
I have no technical description of these, but the scale is verry corse (some
0,3mm) and it has a number of pins to connect so I think it is one with multiple
detectors in V Form. Using a microcontroller to sample this "grey code" like
signals and count like Andy did with the resolvers sounds good to me. I will
have to do an experiment...

bye
Ulf

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