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The FreeEMS Box ! 
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Added benefit of using a non-momentary switch = keeps the engine from starting should a low-life try to steal the car. If you install R7 in place of D1 then you could pretty safely run 2 wires out, externally mount the LED and the switch, and use a sensor ground wire to switch back against.

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Wed Feb 19, 2014 10:04 pm
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LQFP112 - Up with the play
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I key based switch would be nice.


Wed Feb 19, 2014 10:49 pm
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LQFP112 - Up with the play
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About that key switch, while mumbling around on digi-key, i found this
Image
C & K components Y100AA2C203NQ
With 3 positions, providing a way to somewhat securely getting the board in load mode, and since there are terminals that are complety isolated from each other, one position, can function as power cut off for the board, giving an extra basic security, the key comes out in any position, so you don't need to leave it there.

Datasheet

What do you guys think ?


Tue Feb 25, 2014 3:54 pm
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Another nice idea! :-)

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DIYEFI.org - where Open Source means Open Source, and Free means Freedom
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!


Tue Feb 25, 2014 7:52 pm
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