add chirp for on and off
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=64728
Printed Date: May 13, 2025 at 12:29 AM
Topic: add chirp for on and off
Posted By: artm
Subject: add chirp for on and off
Date Posted: October 20, 2005 at 11:33 AM
I recently purchased an Omega REC-43T remote to control a coolant heater. I was told outputs are -500mA but I'm getting +230mA - constant. Anyway, this is better for me.
I'd like to add a chirp circuit to tell me when the output is valid when switching on (+230mA) and off (0mA).
The constant-to-momentary circuit here:
https://www.the12volt.com/relays/page5.asp#ctm
will do the job when switching on but how do I handle the off part? I assume I need a second relay but can it be done with only one?
-Art
Replies:
Posted By: ihookitup4u
Date Posted: October 21, 2005 at 3:28 AM
Ok the easliest way is real cheesy or u need to use relays yes more than one. Take the relay that you are going to use in the 1st place and strap it to the shock sensor so when it clicks it will trigger you soft chirp. It has been done. But it will only chirp when the alarm is armed , lol .
Post again if you need a relay config. It is going to take a few though.
Posted By: artm
Date Posted: October 21, 2005 at 9:55 AM
There is no shock sensor. I'm simply using the remote to trigger a block heater. So, like a remote starter I need to hear the chirp to know it's been activated.
No big deal using two relays but I have a two channel remote so four relays just to chirp? Sounds much but at least it's cheap and simple to wire.
The other way to do it is with a flip-flop circuit in which case only one relay will be needed but that involves extra circuitry, circuit board, etc.. I'd rather do the relays to be honest.
Posted By: infinkc
Date Posted: October 21, 2005 at 11:45 AM
not sure if you thought of it, but if you have a chrip for on and off, how will you know the difference if it is a on or off chirp? im not sure how long you plan on having the heater on, but i might suggust just activating your parking lights when its on, you can even flash the parking lights.
Posted By: artm
Date Posted: October 21, 2005 at 11:54 AM
The heater(s) can be on for 10-20 minutes. Since I'd be using the remote from inside the house, I need to hear the chirp rather than see the lights.
If I hear a chirp when turning it on that's good enough. Normally I would turn it off when entering the vehicle but I would like the option to do it from the house - hence the double chirp but that's with circuitry.
Posted By: gus1
Date Posted: October 21, 2005 at 12:10 PM
Could use a DEI 452T to trigger a relay to triger a small siren.
Feed a negative input to the orange wire, and it wil outpur one pulse on the green wire. Take the ground away from the orange wire, and it will send out another pulse on the blue wire (or, use the double pulse output to get 2 chirps on shut down). Super simple, one box solution that you can do for probably $30, all parts necessary. We actually use one to give a door chirp for the front door of the shop....
Gus
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Wherever I go, that is where I end up......
Posted By: ihookitup4u
Date Posted: October 22, 2005 at 2:09 AM
What I dont understand is if you knew the answer why did you ask the question??? Just trying to help, but it sounds like you dont need it to me.
Posted By: KPierson
Date Posted: October 22, 2005 at 6:25 PM
I could make a circuit to do exactly what you need done really easily. I've been doing quite a few smaller custom projects lately in my spare time - https://kptechnologies.com/forums/viewforum.php?f=31 It would be set up to monitor the 12vdc used to power the heater. Once it detects power it would output a short 100ma (-) output. Once the power is gone it will output 2 short (-) outputs. You can hook the output up to your horn, parking lights, external siren, etc... Let me know if you are interested, it would work much better then a relay system, and be low cost. Good luck! ------------- Kevin Pierson
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