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turbo2ltr
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Re: Figuring out how to disable the noisemaker

Tue Apr 12, 2011 11:03 am

GeekEV wrote:OK, just in case he doesn't get to it, can you tell me which pins do what on your original diagram? Pin 1 seems pretty clear to be ground. Is pin 11 the +12v input trigger? And pin 5 the button press output? Is the output pin positive or negative? Based on my interpretation of the TR-7 functionality, I'm hoping it's a case of connect the +12 input to the negative output...

Thanks man!



Oh, sorry. Red/11 is power (but it's switched ignition power) and black/1 is ground. When you press the button, a ground is put on 5(green).

If you need constant power, that's the blue on pin 13

Looking at the back (wire entry) of the connector, the "key" in the up position, there should be an empty terminal on the bottom right.

The wiring goes

Code: Select all

8 | 7| 6| 5| 4| 3| 2| 1
16|15|14|13|12|11|10| X
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GeekEV
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Re: Figuring out how to disable the noisemaker

Tue Apr 12, 2011 11:13 am

Perfect, thanks! So my second guess at the wiring would seem to be correct. I'll give it a go when I get my TR-7 in and will update this thread.

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turbo2ltr
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Re: Figuring out how to disable the noisemaker

Tue Apr 12, 2011 11:21 am

I think you'll need 4 wires. You'll need to power the module with constant power and use the switched power as the trigger. or you may be able to power the module and trigger with the switched ignition power. So you'd tie two wires from the module together and connect to pin 11.
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GeekEV
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Re: Figuring out how to disable the noisemaker

Tue Apr 12, 2011 11:33 am

Looking at it again, I think you're right. I was looking at their sample diagrams on page 4, but the seem to be ignoring the black and red completely on all of those, so...

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nater
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Re: Figuring out how to disable the noisemaker

Tue Apr 12, 2011 4:40 pm

Guys, I'll post the wiring for the TR7 shortly. Just tell me, what happens when the button is pushed? Is a certain pin shorted to ground?

Nate

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turbo2ltr
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Re: Figuring out how to disable the noisemaker

Tue Apr 12, 2011 4:45 pm

When you press the button pin 5 (green) is grounded for as long as you press the button.

Also know there is a 5V pullup on the line. I was surprised to see that its 5V and not 12, but that just means that connecting 12V to the line will probably damage the controller.
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nater
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Re: Figuring out how to disable the noisemaker

Tue Apr 12, 2011 4:50 pm

Turbo, you mean if the TR7 applies voltage to the line, we'll damage the car? Or you mean 12 volts will run through the TR7 when we ground that pin?

Nate

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turbo2ltr
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Re: Figuring out how to disable the noisemaker

Tue Apr 12, 2011 4:56 pm

It just surprised me that the pullup was 5V. That leads me to believe it may be a logic level input with a direct connection to the microprocessor. I don't know for sure and it's certainly not the norm for an automotive grade product. But if the module puts out 12V on the trigger line, it could blow the controller. The instructions say there are two outputs that throw a ground, I'd just confirm that its completely open (no ground, no power) when powered but not triggered before connecting it to the car..
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nater
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Re: Figuring out how to disable the noisemaker

Tue Apr 12, 2011 5:22 pm

Good point. We can always do a relay if need be. I shipped the two that I have to Geek, so he'll have to test it.

(Geek, are you listening?)

Nate

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Re: Figuring out how to disable the noisemaker

Tue Apr 12, 2011 7:16 pm

So, for the TR7, try mode 9. Then, attach the red wire to constant +12v (batt), the black wire to Ground (-), the green wire to the ignition-on (some wire that's hot when the car is "ready"), and the white wire to the button press (that will cause the button to be grounded, just like actually pressing the button).

Cap the other wires with electrical tape, and don't let them short together.

Geek, please check that there is no power on the white wire when the module is powered. (doubtful).

Nate

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