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Old 08-14-2012, 07:06 PM   #16
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Motion detection, followed by delay, then a timer?


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I think you will find that the best odor control will be from a fan that runs continuously. You could use a speed control to turn it down, decreasing airflow and power consumption if you're concerned about it. I did exactly that for a similar cat box ventilation project awhile ago.

If I REALLY wanted the fan to run only when the device cycles, I would disassemble the cat box cleaning mechanism and use a signal that controls some aspect of the device (like the scooper motor) to trigger a one-shot timer that runs the fan for a set period.
You're probably right. I am sure having some ventilation will be good 24/7.

OK, so how about running the fan at a low speed when the CatGenie is idle, and when it starts have a timer kick it up to high for 30 minutes? Is that possible?

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Old 08-14-2012, 07:57 PM   #17
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Motion detection, followed by delay, then a timer?


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You're probably right. I am sure having some ventilation will be good 24/7.

OK, so how about running the fan at a low speed when the CatGenie is idle, and when it starts have a timer kick it up to high for 30 minutes? Is that possible?
Now you need a two speed fan or a VFD. This is getting outa hand.LOL.
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Old 08-14-2012, 09:40 PM   #18
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Motion detection, followed by delay, then a timer?


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Originally Posted by dabagnale View Post
You're probably right. I am sure having some ventilation will be good 24/7.

OK, so how about running the fan at a low speed when the CatGenie is idle, and when it starts have a timer kick it up to high for 30 minutes? Is that possible?
Of course it's possible... but this is really one of those situations where if you have to ask, it's not for you. Just set it at a reasonable speed and leave it alone.

If you insist on having the fan controlled in some way by the CatGenie, you're going to have to hack the CatGenie to obtain a signal that controls some sort of timer, which operates a relay to control the fan. This is not terribly complicated for an electronics geek, but it's out of reach if you aren't one already.
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Old 08-15-2012, 02:43 AM   #19
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Motion detection, followed by delay, then a timer?


The OP said in Post #6 said his problem is 'Air Ventilation'.
I hear that as: 'Air Odor'
Here is a common way to minimize that problem.
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Old 08-15-2012, 10:59 AM   #20
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Motion detection, followed by delay, then a timer?


I like complicated things. I have an obsession with automation too you might say. I am somewhat OCD among other things I won't get into...

The fact that I own a $300.00 CatGenie and spent $200+ on ventilation rather than scooping cat litter or buying a simple air freshener should prove that.

My desire and time/effort I put in to avoid having to manually do something overcomes all reason. Ask my wife... she has to put up with me.

I'm not crazy, everyone else is!

Last edited by dabagnale; 08-15-2012 at 11:09 AM.
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Old 08-15-2012, 04:18 PM   #21
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Motion detection, followed by delay, then a timer?


This is as simple as it gets.
Use a digital timer. Calculate the frequency of needed exhaust, then program the timer to control fan operation
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Old 08-15-2012, 04:29 PM   #22
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Motion detection, followed by delay, then a timer?


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I like complicated things. I have an obsession with automation too you might say.
Build a robokitty that doesn't make stinky messes.
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Old 08-15-2012, 05:52 PM   #23
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Motion detection, followed by delay, then a timer?


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I like complicated things. I have an obsession with automation too you might say. I am somewhat OCD among other things I won't get into...

The fact that I own a $300.00 CatGenie and spent $200+ on ventilation rather than scooping cat litter or buying a simple air freshener should prove that.

My desire and time/effort I put in to avoid having to manually do something overcomes all reason. Ask my wife... she has to put up with me.

I'm not crazy, everyone else is!
Try this:

Cat detected by motion sensor
Turns on light but instead of bulb energizes coil of RIB2401D
Cat leaves, after delay of motion sensor hold-on time bulb goes off turning off RIB2401D coil
NC contact of RIB2401D now closes and energizes RIBD2421C delay relay
Delay relay turns on fan and leaves running for time as set by delay switches inside delay relay
If you actually build this enter it here: http://en.wikipedia.org/wiki/Rube_Goldberg_machine
Attached Thumbnails
Motion detection, followed by delay, then a timer?-cat-sensor-v2.jpg  

Last edited by curiousB; 08-15-2012 at 06:02 PM.
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Old 08-15-2012, 07:37 PM   #24
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Motion detection, followed by delay, then a timer?


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Try this:

Cat detected by motion sensor
Turns on light but instead of bulb energizes coil of RIB2401D
Cat leaves, after delay of motion sensor hold-on time bulb goes off turning off RIB2401D coil
NC contact of RIB2401D now closes and energizes RIBD2421C delay relay
Delay relay turns on fan and leaves running for time as set by delay switches inside delay relay
If you actually build this enter it here: http://en.wikipedia.org/wiki/Rube_Goldberg_machine
LOL!! I love the diagram. BTW, I am going to try it... placing orders tonight!

Last edited by dabagnale; 08-15-2012 at 07:51 PM.
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Old 08-16-2012, 11:43 AM   #25
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Motion detection, followed by delay, then a timer?


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Originally Posted by curiousB View Post
Try this:

Cat detected by motion sensor
Turns on light but instead of bulb energizes coil of RIB2401D
Cat leaves, after delay of motion sensor hold-on time bulb goes off turning off RIB2401D coil
NC contact of RIB2401D now closes and energizes RIBD2421C delay relay
Delay relay turns on fan and leaves running for time as set by delay switches inside delay relay
If you actually build this enter it here: http://en.wikipedia.org/wiki/Rube_Goldberg_machine
After looking at those relays, it looks like RIBD2421C isn't able to be adjusted beyond 20 minutes. I'd like it to operate the fan for the duration of the cleaning cycle + 10 minutes.

CatGenie goes like this: After no more cats are detected, A delay of 30 minutes begins, followed by the cleaning cycle which lasts for approx. 35 minutes.

So I need it to mirror that + 10 minutes.
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Old 08-16-2012, 12:11 PM   #26
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Motion detection, followed by delay, then a timer?


Quote:
Originally Posted by dabagnale

After looking at those relays, it looks like RIBD2421C isn't able to be adjusted beyond 20 minutes. I'd like it to operate the fan for the duration of the cleaning cycle + 10 minutes.

CatGenie goes like this: After no more cats are detected, A delay of 30 minutes begins, followed by the cleaning cycle which lasts for approx. 35 minutes.

So I need it to mirror that + 10 minutes.
http://www.ebay.com/itm/Siemens-Time...7#ht_500wt_922
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Old 08-16-2012, 03:13 PM   #27
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Motion detection, followed by delay, then a timer?


Or use one of these:

http://www.functionaldevices.com/pdf.../RIBD01BDC.pdf


connect it with low voltage wiring to a microswitch like this:

http://omvol.en.alibaba.com/product/...sotherproduct1

Secure switch to some part of the mechanism that moves around. When a cleaning cycle starts the relay is tripped by opening contacts (delay on break). Each time the mechanism touches the switch the delay relay restarts the delay count down. After the motions stops and the dry contacts no longer cycle the relay eventually times out and shut off the fan. No motion detector required..... low voltage (dry contact) to microswitch means safe for kitty....

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