[Weather] [personal] Weather PCB dimensions

[Matt]

I was pondering the potential usefulness of dead computer mice.
For wind speed, a rotating disk with a suitable patterned texture would work
for the optical mouse sensor.
http://www.avagotech.com/assets/downloadDocument.do?id=1568



-----Original Message-----
From: weather-bounces+mjoyce=iinet.net.au at buoy.com
[mailto:weather-bounces+mjoyce=iinet.net.au at buoy.com] On Behalf Of Jim Pace
Sent: Monday, 20 November 2006 4:24 AM
To: List for 1 Wire Weather Stations and devices
Subject: Re: [Weather] [personal] Weather PCB dimensions

I replied to Matthew in a separate email regarding his request, but this 
seems like a great subject for a group discussion.
If we were to redesign the wind instrument, what would we do differently?
My first thought is that, like the originals, the KISS principal should be 
adhered to.
Micro power hall effect sensors are available, should the sometimes 
troublesome reeds be replaced?
Is there a better way to do wind direction, with finer resolution?
If an improved design will require external power, is that OK? It is for me.
Shouldn't we dispense with surface mount devices on the board as much as 
possible?
Would love to hear your thoughts.
Jim
http://ecapmiill.home.comcast.net
----- Original Message ----- 
From: "Matthew" <matthew at carnmore.freeserve.co.uk>
To: <weather at buoy.com>
Sent: Saturday, November 18, 2006 11:27 AM
Subject: [personal] [Weather] Weather PCB dimensions


> Hi all,
> I'm considering redesigning the weather station pcb and would be very
> grateful if someone could help me with the critical dimensions.
> e.g. diameter, connector space dimensions, and reed spacing for both
> speed and vane (i.e. the radius of the magnet centres). I don't have
> this info myself as I don't yet have a weather station. It is my
> intention to re-work the design using a 2408 for the direction and hall
> sensors to replace the reed switches. All in surface mount, with IDC
> connectors (like phone and network punchdown connectors) for the
> connection of the lan and power for the hall sensors.
>
> Perhaps this could be a V4 PCB?
> Can anyone help?
> Matthew
>
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