dca386da

PID: SoupGate-Win32 v1.05
On Friday, December 21, 2018 at 4:17:10 PM UTC-5, D.M. Procida wrote:
> I'm fairly new to servos.
>
> I see that they come in two basic types: continuous rotation (their
> speed of rotation is determined by the pulse width) and fixed travel
> (usually 180 degrees, sometimes a bit more).
>
> They come in various standard (not sure how standard these actually are)
> sizes - micro, sub-micro, standard.
>
> And they can have plastic or metal gears.
>
> What else should one be aware of? I have an application in which I'd
> like reasonable accuracy and precision, and for a 5-degree command (say)
> to have a 5-degree output.
>
> I've been fooling around with a pair of HiTec HS-55s - they're OK, but
> they are not what I'd call precise. One of them also takes the slightest
> excuse not to respond (possibly my abuse has damaged it).
>
> If I wanted something stronger and more accurate, and don't need more
> speed, what sort of thing should I be looking at?
>
> Thanks,
>
> Daniele

Thru experience, it's alot easier to move a servo to an exact angle, than a
stepper. I never saw a stepper with 360 steps/rev. I use servos for antenna
pattern testing.
That said, different servos have different PID loops. I've had some oscilate
while settling to an angle, while others didn't. Some a programmable.

--- SoupGate-Win32 v1.05