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First of all, I have no idea what you're talking about either when you talk about connecting the transistors together, or when you talk about the stepper stuttering. Neither of those statements make any sense to me. I skimmed over the thread you linked, but don't know why it's supposed to be relevant. Also, when did I say I was against using op-amps? I never said anything like that. I only said the stepper idea is a good one, is simple to implement and offers some advantages over the primative op-amp solution. I disparage no op-amps.
thanks vizier, just wanna ask before I purchase the component...
Quote by Dragon Tamer: 10/4=2.5 in other words there are 2 outputs on the 4017 that are not used. this will cause the motor to briefly stop rotating until the ic is reset.
my link you are looking for the image that 3v0 posted, the big one. that is my failed circuit when i tried to achieve a similar goal.
What the heck are you talking about? All outptuts of the 74194 are being used. There is no 4017 in the diagram you posted! Please do your homework before posting. If you honestly don't know how something works, then ask.
What does your failure have to do with what can be achieved? Many others have succeeded where you have failed. I've used steppers since the 70's, and I've never had any of the issues you are trying to convince me exists.
Why did you use 2 photo cells?
To turn on a relay. Not enough power for the photo cells to run a motor. Every time the sun closes the relay the unit moves forward out of the sun. I was using a 120 VAC motor to make 20 solar collectors track the sun. The collectors were making steam to run a steam engine in July and August.
I'm getting tired of watching you posting the same false and erroneous information over and over. A noobs job is to keep his eyes and ears open and try to learn from those who have gone before, not to try to defend something that was completely incorrect to begin with. This forum is for people who know what they are talking about. Those who don't should listen to those who do.
There is nothing complicated or complex about using the stepper solution, your tortured drawing notwithstanding. The O/P is an engineering student, and as such, should be capable of understanding these simple concepts, if you would cease trying to overcomplicate them. In fact, I really don't care which circuit he uses, I only care about getting the information correct, and nothing you've written about the steppers has been correct. Once again, it's not a complicated solution, no matter how much you try to complicate it.
I saw it. Also noticed the title on the drawing But you have to go out every night and point your array back to the East. Um...