[amsat-bb] Re: Pendulum type elevation measurement

Art McBride kc6uqh at cox.net
Sun Feb 24 22:15:15 PST 2013

Panasonic and others offer a single or 3 axis accelerometer for Wi game
controllers. They provide outputs in analog, or digital. Sts and others also
have these with only digital outputs. The Single axis unit is 0.2 " square
by 0.1 " high runs on 5 VDC.


-----Original Message-----
From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On
Behalf Of Gus
Sent: Sunday, February 24, 2013 1:15 PM
To: amsat-bb at amsat.org
Subject: [amsat-bb] Re: Pendulum type elevation measurement

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 

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.

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