Quote Originally Posted by champion View Post
Skimask, I don't think that you have read about my problem. I believe I said before that I need a resolution of at least 360*60=21600 pulses per revolution. Okay, try and find an encoder that has more than 8192 ppr for less than $100. You can't. Then I guess you could use a quadrature decoder along with the encoder to increase the resolution. There you have 8192*4=32768 ppr. That's enough resolution. So what is it that you think that is physically impossible? Didn't you read above that I was using a decoder? And why do you keep talking about missing pulses or any need for a higher frequency oscillator? I think you're probably a smart guy so that's why I must assume that you are simply not reading the entire thread carefully. Go back and read through all of the posts before you make any more comments. k?
Somebody's sarcasm detector is broken...
I get it, got it, bought the movie...
1 minute of resolution - gear reduction works too, depending on the physical application of course
How do you increase the resolution from an encoder which only puts out X ppr?
Missing pulses? higher oscillator? what?
Read thru it -
You said you have an encoder All I said was that you could save some headache, not to mention PCB space, by using a PIC with some creative programming and still have loads of accuracy at high rpm, instead of relying on a dedicated decoder/counter/shift register and probably save a couple bucks on top of it. Not only that, but you never did say what the end product might be (crank trigger, star follower, gps guided egg cracker, etc).