[amsat-bb] Re: Pendulum type elevation measurement

[Gus]

On 02/24/2013 07:45 AM, Richard Ferryman wrote:
> For some time I have wanted a more accurate antenna elevation measurement system.  Shaft encoders are beyond my budget.
Do mice still have balls?

Once upon a time every old mouse had two optical shaft-encoders built 
right in.  And mice can detect very tiny movements, so the 
sensors/encoders must be fairly precise.  Nowadays, most mice are 
optical or 'laser', but apparently, some mice are still available with 
balls.

So, who is going to take a mouse apart and use the bits to sense AZ/AL 
angles on an antenna array?

-- 
73, de Gus 8P6SM
Barbados, the easternmost isle.