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Geek Culture / Electronics Problem - Door Chime

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John Y
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Posted: 11th Oct 2012 17:09
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When I am at home I am usually far away from the door chime that was installed with the house.

My solution was to buy a wireless converter and wireless door chime to plug at the other side of my house.

So, currently there is a mains powered setup where as someone presses the door bell the chime sounds.

I bought this converter (http://www.amazon.co.uk/Evo-D3202N-Friedland-EvoPlus-Converter/dp/B004G6GHW4/ref=sr_1_3?ie=UTF8&qid=1349964208&sr=8-3) and installed it as the manufacturers instructions. Which is to 'piggy back' on the two cables coming from the button.

When I press the door bell only the wired chime sounds, if I disconnect the wired chime, and leave the converter connected the wireless chime sounds.

What would cause this? Is the wireless converter not sensitive enough when the wired chime is connected?

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Van B
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Joined: 8th Oct 2002
Location: Sunnyvale
Posted: 11th Oct 2012 17:14
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The wired chime is probably pinching all the juice. Like, you can't just split a cable and expect the same voltages to be sent through the 2 sets of wires.

Personally, I'd buy a double-acting button - so you can have the wired chime and wireless hack chime running seperately, but in parallel when you press the button - like having 2 seperate buttons, one for each chime. In fact, you could just get 2 buttons, stick them next to eachother and stick something on top, so both buttons are pressed at the same time.

To do it with just 1 single acting button, you'd need to split the voltage, or use a relay, or do some other crazy stuff... better to just get a double-acting button and keep the electronic side nice and simple.

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bitJericho
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Joined: 9th Oct 2002
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Posted: 11th Oct 2012 21:46
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Would it be safe to put it in series? So instead of splitting the juice, it must go through the wireless chime circuitry in order to complete the circuit to the main line?

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Dark Java Dude 64
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Posted: 12th Oct 2012 06:02 Edited at: 12th Oct 2012 06:03
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Ah! Id agree that the wireless thing is likely taking all of the juice from the wired connection, as vanb said. Personally, what I would do is add some sort of resistor on the input lines of the wireless thing to raise its resistance thereby reducing its overall current draw. However, no clue if that would screw with the operation of the wireless device or not... Depends on the type of amplifier it uses for transmitting the signal, etc.

Ooh wait, does that thing wirelessly connect to the wired chime? Or are there physical wires connecting them?

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John Y
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Posted: 12th Oct 2012 10:39
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It doesn't work in series, I've tried. Neither the wireless chime nor the wired chime work then.

Yeah, I thought of putting a resistor between the converter and wired chime to see if it enables the converter to detect a current.

The interesting thing is that the converter is actually self powered, and to get it to work all I need to do is put a wire between it's two inputs. I think a relay may work as well, need to get some voltage readings from the wires when the button is pressed I think.

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