Involvement:Expert (understands the inner workings) - Ownership:1 week to 1 month
This is one of the fun items to use with your development board or in an actual application. There is enough information on the internet on how to connect, how to install light sensor, how to install temperature compensation for high ambient temperature. Also found the Eagle schematics and board layout. There is also documentation (of course not from DX) which explains the soldered bridge H&L.
I will quote for you:
//"two trigger mode: (can be selected by solder-bridge)
a, can not repeat the trigger: the sensor output high, the delay time is over, the output will automatically become low from high;
b, repeatable trigger: the sensor output high after the delay period, if the human body in its sensing range
Activities, its output will remain high until after the delay will be left high to low (sensor module review
Measured activities of each body will be automatically extended after a delay time, and the final event of the delay time
Starting point of time)."//
Capacitors should be smaller (surface mount).
Connector pins were very very bend.
Looking again on internet this module should be cheaper. But for this price you cannot build your own.
Just grab one. It's fun to experiment with your ARcuino
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