Knock Block Logging

Ecu Hardware Modifications
v6bucket
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Knock Block Logging

Post by v6bucket »

I have a Link KnockBlock G1, is it possible to log it through TunerPro? It has 3 wires to connect to a KnockLink G1 digital, so I gather it has an output signal, so I'm sure someone a lot smarter than me with electronic things may be able to assist with how to connect to TunerPro, if possible.
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vlad01
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Re: Knock Block Logging

Post by vlad01 »

any documentation on the output? or general documentation?
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VL400
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Re: Knock Block Logging

Post by VL400 »

http://www.linkecu.com/support/document ... lockG1.pdf

You could log the blue wire, 0-5V analog output.
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vlad01
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Re: Knock Block Logging

Post by vlad01 »

how much is the knock block? where do you buy them in Oz?
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v6bucket
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Re: Knock Block Logging

Post by v6bucket »

"Definition of a Drag Racer: A person who spends money he doesn't have on parts he doesn't need to impress people he doesn't know." - Grumpy Jenkins----- Poverty---
v6bucket
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Re: Knock Block Logging

Post by v6bucket »

Is pin C15 suitable to connect the KnockBlock too? If it is, what changes do I need to make to TP5?
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VL400
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Re: Knock Block Logging

Post by VL400 »

Pin B12, its a spare analog input 0-5V.

The ADX should already have this defined and give a 0-5V reading when logging.
v6bucket
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Re: Knock Block Logging

Post by v6bucket »

I've connected the KnockBlock to pin B12, the instructions say that "The output voltage should be at a low level under normal conditions & increase significantly during knock." It shows 4.96v when the engine is running, disconnect the sensor it jumps to 5.00v. It appears to inverted, I changed the figures around, but only moved the position in the monitors section from the top to the bottom.
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VL400
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Re: Knock Block Logging

Post by VL400 »

Sounds like the knock interface is not a fan of the pullup resistor on the B12 input. Measure the output of the knock interface with a multimeter while not connected to B12, if its a voltage closer to 0V thats the issue.

Can disable the pullup like this...
B12 Pullup Remove.jpg
B12 Pullup Remove.jpg (371.23 KiB) Viewed 6890 times
v6bucket
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Re: Knock Block Logging

Post by v6bucket »

I checked it a couple of days ago, think it is less than 1v, but will check again. So just de-solder & lift out & leave?
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