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Arduino 12V analogue input

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    #32
    spr1nt3r
    Registered Users Posts: 390 ✭✭spr1nt3r


    eeguy wrote: »
    They're dropping the voltage across the resistor.
    See the first note on increasing the resistance value for higher voltages.

    If you look at any beginner LED project they usually have a 2-300 ohm resistor in series with the LED when powering from a 5V supply.

    Thanks. Ordering a bunch of resistors, 1N4001 diodes and PC817 optocouplers. Seems to be dirt cheap coming from China.

    Will also get blue insulated heatshrink butt wire connectors so I could cut existing wire, insert it back into this connector and also insert a 3rd wire for my monitoring needs. Heatshrink the hell out of it and we're done.


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