Challenge Four - Portable Alarm (v2)
Connect the 9v battery holder to the red/black power rail, matching the colours
Connect your piezo buzzer so one pin is in A27 and the other is in the black power rail
Put the long leg of the green L.E.D. in A21 and the long leg of the red L.E.D. in A23. The short legs of both go in the black power rail.
Put the green jumpers from the light sensors into J26 and J27 (the A0 and A1 pins of the Arduino)
Use a yellow jumper to join J19 to the yellow power rail
Use a red jumper to link I16 to the red power rail
Use a black jumper to link A19 to the first black power rail
Use a black jumper to link the first black power rail to the second black power rail
Connect both yellow jumpers from the light sensors to the yellow power rail
Connect the black jumpers from the light sensors to the first black power rail.

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