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ITS1A CLOCK
Motion Sensor
Another option: The software includes support for a motion sensor. It should be powered by 5V and
have a 3V3 signal output. A value of 3V3 should indicate that motion has been detected.
Attach the signal output to the pin (or hole) marked RX on the programming header at the back. Attach
0V/ground to any convenient GND point on the board. Likewise, attach +5V to any convenient +5V point
on the board.
Personally I find it useful to connect an LED across signal and 0V, so I can see if the sensor is actually
working. If you do, don't forget a current-limiting resistor!
The clock will work fine without a motion sensor attached – it is only used if you connect one.
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