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Or an LM393.Very nice schematics and clean output, but I don't have LM339, I will have a look at the storage see if I can find some LM339.
In the post #13 circuit, opening or closing switch S1 determines whether the pulse width increases or decreases. For your camera application, won't you need also to keep the width constant once the desired position has been reached?
My understanding was that the servo goes to a position according to the pulse-width so if you ouput pulses at a constant pulse-width it should go to that position and stay there.the 555timer circuit outputs pulses constantly when button is pressed, so ya the servo would keep going until it hits the limit and start humming.
Excellent idea, ht2K!!My other thought would be increment step per click of relay, this I can definitely reach to my desire angle.
No, that is correct.My understanding was that the servo goes to a position according to the pulse-width so if you ouput pulses at a constant pulse-width it should go to that position and stay there.
Am I wrong?![]()
Not sure if that will work. It's my understanding that a model servo isn't too fussy over the pulse period; anything around 10-50mS being accepted. How would it respond to 1 (1mS-2mS wide) pulse every second, say? Would it do what you hope or just ignore the pulse?to have 'speed' control he could make the 20mS Frame period [555] adjustable.
How would it respond to 1 (1mS-2mS wide) pulse every second, say? Would it do what you hope or just ignore the pulse?
The beauty of many of the μCs out there (Arduino, in this case) is the abundance of open source "freebie" programs out there ("sketches" in Arduino speak).... to provide PWM sig I would have to change the code and I'm not really good with codes. ...