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    Help me build an OBD II scanner for reading diagnostics from auto computers

    16f84 obd hi, what a shame that they don't give the .hex file for the 16f84 :( does anybody knows where to dl it ? greetz, gelly
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    Problems with rotary encoder project

    encoder hi 2000, i finally uploadet an image of quadrature encoder. hope this image is clearing up a bit. ( i'ts just a scratch draw of principle ) hxxp://www.angelfire.com/freak/gelly/encoder_mouse.jpg about the problem u just having... cant say mutch, because of too less info on whole...
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    Fast Prec I to V - problem with noise

    noise hi normally 12 bit is at the edge for a scale of 1000 (for na values). -did u decouple the i/v output voltage with small ceramic condenser ? -are your measuring wires not too long ? -try to 'transport' that signal with a thin coax cable (schield grounded 1 s.) -decouple your i/v...
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    How does the mouse know if its going forward or backwards?

    encoder hey guys, stick to the point when the man wants some info, just try to help and dont explain him the optical mouse technology. the question was about an dc motor and encoder. well, about the fotocells, they are fitted in one housing and 'looks' like 1 thing that supposed to be the...
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    How does the mouse know if its going forward or backwards?

    mouse hi if u go to the link i gave before, u'll understand.... u have 2 sqware waves, the 2 waves are shifted 90° (mechanicly, by moving the 1st fotocel 1/4 wave further than the 2nd fotocel) if u see this picture (imaginary) in front of you.... than u can say... if upgoing edge 1st fotocel...
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    How does the mouse know if its going forward or backwards?

    mouse wheel hi actually, the mouse have 2 axes (x and y) if u remove the ball, u'll see 2 axes and 1 or 2 wheels to close up the ball. the encoder is a quadrature encoder type like used un feedback motors like servo...(only dubble made) for further encoder info (details ) see link below...
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    Video and voice wireless transmitter

    try this link h**p://www.nvlsi.no/Datablad/RF_overview_frame2.htm think there u'll find something suitable something else u can try; (depends on witch range u desire) an video modulator ( everyone has an old broken VCR somewhere in the howse, atleast, i dont throw sutch things away) -mostly...
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    pic16f877 in circuit programming

    pic16877 in circuit programming using low voltage mode, is the same as losing the pin rB3 i/o. so, i dont like it either.... otherwise, using standard high voltage mode could be done, when u use a voltage switcher on the mclr pin, combined with a analog switch 4066 on the rb7, rb6 pin. this...

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