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Step7 – Connecting the resistor:
Bend the legs of the beige resistor towards one another as
seen in the picture
Place one resistor leg into the terminal block at the pin
labeled GPIO 12 (the third pin up from the bottom of the
right-hand side of the Proto Board).
Place the other leg into the connector at GPIO 11. There is no polarity on this resistor, so
it does not matter which leg you choose for which pin.
Tighten the screw for GPIO pin 12 only. This should lock the one leg of the resistor in
place. We’ll address the other leg in a moment.
Step 8 – Connecting the photo-cell:
Place one leg of the photo-cell into the pin labeled GPIO 11 (don’t worry it is supposed
to share the connector with the resistor) and the other leg in the last slot in the connector
(the GND pin). There is no polarity on the Photo cell, so it does not matter which leg you
choose for which pin.
Tighten the associated screws and try a gentle tug on
the components. They should not move, but be firmly
connected to the device.
Carefully bend the photo cell so that the face of the
component points up. Refer to the pictures; they really
can be worth a thousand words.
Aside: Feel free to trim the leads of any of the devices to provide a ‘tidier’ setup.
Note : While not used in any demo scripts, there are software-controlled
internal pull-up resistors available for each input pin. These can be controlled
using the setPinPullup() function. See the SNAP Reference Manual for more
details.
EK2100 Users Guide-v1.5
Page 37
of 53
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