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    13. Solder one of the two pin male connectors short side to the negative 0v on the logic board using enough stranded wire long enough to reach the LED connector on the robot arm. 14. Solder another wire to the other pin of the male connector

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    Figure 2

    The circuit can also be modified for voltage output. An external P MOSFET ensures high output resistance and a broad compliance voltage range extending from 2V below the positive supply VSP to voltages well below the negative supply Gnd . The adjustable 3V to 15V sub regulator output provides the supply voltage for additional circuitry.

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