[simpits-tech] phidgits + Building Guages

[simpits-tech@simpits.org]

Gene Buckle wrote:
> 
> The problem is that everyone and their brother has a neat method of
> driving a stepper motor, but nobody says anything about *feedback* from
> that motor.

That's because steppers can't talk back (or they would be servos).
Fortunately for them, you talk enough to take up their slack ;)
 
> This is a required feature for something like an ADI or HSI and useful for
> something like an altimeter.  THIS is something I'd throw money at.

1x Futaba S148 (since I have a ton of them) + 1x whatever gizmo you want
to control it + suitable programming... RC servos might not be perfect
since most can't do 360 degrees of rotation, but with the right gearing
it would work for most gauges that don't require multiple sweeps of the
needle (tach, EGT, CHT, flap pos., etc.) For HSI, altimeter, etc. it
would probably be easiest to get feedback from an encoder.

Haven't we all been through this a bazillion times?
-- 
Steve
mysticz28@swbell.net
Jesus saves, Budda enlightens, Cthulhu thinks you'll make a nice
sandwich.