9ab9492a

REPLY:  824a8532

PID: SoupGate-Win32 v1.05
Folderol  wrote:

> On Fri, 21 Dec 2018 21:17:08 +0000
> real-not-anti-spam-address@apple-juice.co.uk (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?
>
> Is there a reason you chose a servo motor?
>
> I've always preferred stepper motors. They are far less finicky and very
> precise. If the step size is too great, you simply gear it down.

Mainly that I happen to have a couple of servo motors already, and
GpioZero and MicroPython can drive them directly.

Daniele

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