Linx

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Professor808
 
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Joined: Mon Oct 10, 2011 12:05 pm

Linx

Post by Professor808 »

I have this magnet sensor that sends radio signals to a device that lights up depending on what magnet sensor has a magnet next to it. I want to build one of these and have been trying to figure out what is inside and what i need to copy this design. Here is a photo of one of the devices. So far I made out the word Linx and the rest I don't know. Does anyone know what these are and what I can buy that will be the same? Image

Here are photos of the inside. In case you want to take a stab at what the other items are inside.

Image
Image
Image

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Franklin97355
 
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Re: Linx

Post by Franklin97355 »


thefatmoop
 
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Re: Linx

Post by thefatmoop »

probably not the same frequency, but with some inspection you could find out which one is on the board

http://www.sparkfun.com/products/10533

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westfw
 
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Re: Linx

Post by westfw »

franklin has it right, I think. The green PCB module is an RF transmitter (except it looks like a receiver.) The TO92 device connected to the wires is probably a "hall effect sensor" which actually detects magnetic fields and the chip labeled LINX is probably a small custom-programmed microcontroller (PIC or AVR) that translates the hall-sensor data into a form that can be transmitted/received well on the radios...

Professor808
 
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Joined: Mon Oct 10, 2011 12:05 pm

Re: Linx

Post by Professor808 »

Thank you westfw now i just need to figure out how to program that chip myself.

SuperJew
 
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Joined: Fri Sep 02, 2011 10:26 pm

Re: Linx

Post by SuperJew »

The Linx LS-series are non-programmable. The device you have there is the LS Decoder, and I'd bet the transmit end has a similar DIP marked LICAL-ENC-LS001 (the encoder). All it does is recieve basically button-pushes from the other end. The transmitter sets one of the 4 input pins (Pins 3, 5, 6, or 7) HIGH, sends the encoded signal to the transmitter via the DATA_OUT (Pin 2) pin. The reciever that you have recieves the signal and sends it to the DATA_IN (Pin 2) on your decoder, which then sets the cooresponding output pins to HIGH. So if Pin 7 on the encoder goes HIGH, the decoder sets Pin 7 HIGH.
I think that made sense...
Digikey sells both the decoder and encoder.
Encoder: LICAL-ENC-LS001 (http://goo.gl/vIHHa)
Decoder: LICAL-DEC-LS001 (http://goo.gl/C7fiF)

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