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> I want to solder the device -signer | need a scheme and your advice
fandnb
Message#1
10.09.13, 13:14
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Hello. Typical household history - home periodically forget to close the refrigerator. He does not signal naturally. It can stand for an hour.
Reminder is useless and not effective. There are small skills to hold a soldering iron. I want to solder the simplest detector with a reed switch.
I attach the device and the reed switch to the fridge. On the door a magnet. The door opened, the signaling sang. Shut down, silent. Reed switch as I understand it should be closed when there is no magnet. And when the door is closed, the magnet opens the circuit.
The scheme should be as simple as possible. Minimum details. Powering a pair of AA batteries I think. And I would like a volume control. I will solder on weight. I think all this should be placed in a box and shoved with batteries there.
From you, please skip the scheme, well, criticism and advice are welcome!


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pasha_550
Message#2
11.09.13, 14:16
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fandnb
You can collect yourself:
http://www.radioradar.net/radiofan/home_ap...frigerator.html
http://www.qrz.ru/schemes/contribute/begin...idgealarm.shtml
You can stupidly buy:
http://chinawebshop.ru/product_92351.html
There is an intermediate option - to buy a designer and stupidly assemble. )
http://www.masterkit.ru/info/newsarcshow.php?num=1158


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fandnb
Message#3
11.09.13, 15:01
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Chinese signalka-box is the most for 100 rubles. I think it is necessary to look for such in Micronica or Chip And Dip

You can close. Ordered on ebee

Post has been editedfandnb - 22.09.13, 21:03
Reason for editing: Close topic


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van4uk
Message#4
05.10.13, 19:28
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The simplest thing is to take a fee from a Chinese musical toy and, instead of a button, hang a reed switch. If it is quiet - to collect on one transistor UZCH. And so on the Internet there are not enough schemes from the simplest to the microcontroller.
djsatan
Message#5
05.10.13, 21:08
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And you can also feed it from the light bulb
the design is small and fits there
No buttons, no gircons, the light came on and the signal was working, the door was closed, the light went out and the signal was in place with it.

Post has been editeddjsatan - 05.10.13, 21:08



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