[Shop-talk] Looking to automate fan with remote pressure padswitch

[Steve Hammatt, Mount Vernon WA USA]

Good stuff, however here’s my objectives:
1.  The room fan is currently installed and controlled by a wall switch
2.  The pressure pad or motion sensor will be located 15’ away and 5’ 
lower elevation (floor level) from the wall switch.
3.  I do not want to tear into the walls, so there needs to be an RF 
link between the sensor and the wall switch. 
4.  The sensor (pressure pad or heat/? sensor) could be dc (battery) 
or could utilize the 110V outlet located 16” from the cat box entry point.
5.  It would be nice to keep the actual wall switch in operation, but the 
new RF switch (with timer) needs to be located at the wall switch location.

Steve Hammatt
Mount Vernon WA USA
www.leatherplates.com



 
From: John Innis via Shop-talk 
Sent: Thursday, February 7, 2019 1:44 PM
To: Obaa 
Cc: shop-talk at autox.team.net 
Subject: Re: [Shop-talk] Looking to automate fan with remote pressure padswitch
Wouldn't even need the light part.  The make a motion sensor that can replace a wall switch.  Like this one:
https://www.amazon.com/dp/B015G8VLNA/ref=cm_sw_em_r_mt_dp_U_TvkxCbMCBJVE7

If that doesn't work for you there are stand alone motion sensors that could be placed near the cat pan to only detect cats. 

https://www.amazon.com/dp/B01L7COUYG/ref=cm_sw_em_r_mt_dp_U_2xkxCb2055TPW

If you are really set on a pressure pad sensor, I'd probably gin something up with an Arduino and a Relay.  More work in HW/SW development, but the possibilities are endless.  You could log all the cat box activity, send a text after a set number of visits to remind you to scoop the litter.... This has a high potential for feature creep...  Gotta run now, off to the shop to start coding....


On Thu, Feb 7, 2019 at 3:07 PM Obaa via Shop-talk <shop-talk at autox.team.net> wrote:

  How about taking a motion sensitive light, and wiring an outlet/the fan in place of the bulb?
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