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Anything not specifically related to the Speeduino hardware. Eg sensors, bluetooth, displays etc
By alessandromeyer
#47539
Hey there

So since I still struggle with my signal from the crank sensor (hall) i'd like to try twisting the wires. Can someone help me with how this should be done. Is it twisting just v- + signal wire? Or twist all three so includng v+?
Surprisingly I wasnt able to find much online since most hits are about Network cables.

Thanks a lot
Alessandro
By dazq
#47541
This is the sort of cable I use for my hall sensors, the be version is the same but two core.
The inner wires are all twisted within the screen.
https://www.ebay.co.uk/itm/3-Core-Scree ... 2746020961
By Jonas Berg
#47547
dazq wrote:
Tue Jan 12, 2021 10:56 am
This is the sort of cable I use for my hall sensors, the be version is the same but two core.
The inner wires are all twisted within the screen.
https://www.ebay.co.uk/itm/3-Core-Scree ... 2746020961
Hi @Dazq, was there a particular reason you went for such a cable? From reading on the interwebs people rarely seem to protect these wires. just curious, thanks!
By dazq
#47548
Jonas Berg wrote:
Tue Jan 12, 2021 8:22 pm
dazq wrote:
Tue Jan 12, 2021 10:56 am
This is the sort of cable I use for my hall sensors, the be version is the same but two core.
The inner wires are all twisted within the screen.
https://www.ebay.co.uk/itm/3-Core-Scree ... 2746020961
Hi @Dazq, was there a particular reason you went for such a cable? From reading on the interwebs people rarely seem to protect these wires. just curious, thanks!
This is actually almost identical to the cable used in the ford , jaguar and rover OEM wiring looms from which my harnesses are mostly constructed.
Some other sensors such as the TPS and 5v pressure are also often on this screened cable.
By alessandromeyer
#47771
dazq wrote:
Tue Jan 12, 2021 8:30 pm
Jonas Berg wrote:
Tue Jan 12, 2021 8:22 pm
dazq wrote:
Tue Jan 12, 2021 10:56 am
This is the sort of cable I use for my hall sensors, the be version is the same but two core.
The inner wires are all twisted within the screen.
https://www.ebay.co.uk/itm/3-Core-Scree ... 2746020961
Hi @Dazq, was there a particular reason you went for such a cable? From reading on the interwebs people rarely seem to protect these wires. just curious, thanks!
This is actually almost identical to the cable used in the ford , jaguar and rover OEM wiring looms from which my harnesses are mostly constructed.
Some other sensors such as the TPS and 5v pressure are also often on this screened cable.

Thanks for the hint! Should the screen-mesh actually be crimped and bolted to the chassis?
By Chipboy
#47772
At one end only should it be earthed, otherwise can form a current carrying path. Twisting is to cancel out common mode interference, electrical noise that will interfere with crank signal.
User avatar
By Chris Wolfson
#47774
Connect the shield to earth / ground / negative at the ECU. That is safe and works.
There are quite some stock Ecu´s that do not use shielded wire for TPS and Hall-sensor, but most inductive pick-up´s have the wires shielded. That what I strongly recommend, too.
By alessandromeyer
#47778
Thanks Chris, is it mandatory to chose a separate v- pin on the ECU or could it be attached/crimped to the ground from the sensor? Unfortunately i lack the theory of what affects what in this regard.

Thanks!

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