Technical > Wiring & Sensors

Speed Sensor Genboard Hardware modification

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multiplex:
I'd like to get this going, but don't want to loose knock.  Is this still the case? Wondering why, figured it would just disable PS/2?

Sprocket:

--- Quote from: MWfire on October 22, 2009, 07:35:49 pm ---for hall use
http://195.159.109.134/vemsuk/forum/index.php/topic,717.msg7413.html#msg7413

--- End quote ---

Thank you :)

MWfire:

--- Quote from: multiplex on October 22, 2009, 08:01:44 pm ---I'd like to get this going, but don't want to loose knock.  Is this still the case? Wondering why, figured it would just disable PS/2?

--- End quote ---
knock has separated input from speed sensor(PS/2)

multiplex:
i have a little box that converts / divides my ABS sensor into a signal that can be used for my speedometer.

it has an extra 'digital' output which i'm planning on using for VEMS.  however its a 0-12 volt signal, and occasionally reads out 20 volts. Not sure how or why (usually when vehical is at rest).

i'm planning on using an optoisolator - feed in the signal, and feed the output to vems. since i have the PS/2 connector, i figured I'd also grab power from it to power the isolator.

Does this sound like a good solution?

MWfire:
You can use that solution for test
http://195.159.109.134/vemsuk/forum/index.php/topic,717.msg7413.html#msg7413 without R4(dont connect to pin1(+5V).
Inevitable put 4.7V or so zener diode.

BTW that is pinout for vems connector near procesor, not ps/2 connector.

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