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Click on the soundAlarm() function to test the buzzer. You should hear a long beep from
the buzzer. (If you do not hear the beep, confirm that you have the buzzer’s polarity
correct in your installation.)
Disconnect the power running to the Proto Board again.
Step 5 – Connecting the resistor (blue) to the Proto Board:
Bend the legs of the resistor toward one another as seen in the picture
Place one resistor leg into the terminal block at the pin labeled GPIO 18
(located on the upper right-hand side of the Proto Board).
Place the other leg into the connector at the pin labeled VCC (located in the center of the
right-hand side). There is no polarity on this resistor, so it does not matter which leg you
choose for which pin. Note that there are two terminals labeled VCC. You could use
either of them here, but for clarity we recommend you use the one between GPIO14 and
GPIO 15.
Tighten the screw for the VCC pin only. This should lock the
one leg of the resistor in place. We’ll address the other leg in a
moment. (Déjà vu?)
Step6 – Connecting the thermistor to the Proto Board:
Place one leg of the thermistor (see picture for identification)
into the pin labeled 18 (don’t worry: it is supposed to share the
connector with the resistor) and the other leg in the first slot in
the connector (the GND pin). There is no polarity on the
thermistor, so it does not matter which leg you choose for
EK2100 Users Guide-v1.5
Page 41
of 53
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