Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week
pulses IR LED for best sensitivity to IR detector. Very nice design, simple to use.
no documentation. you must experiment to figure out how to use.
The circuit uses a 555 timer chip to pulse IR LED, which is detected by IR detector. Use 2K pot to tune 555 frequency for best sensitivity by IR detector (around 38khz). Also, the IR detector can pick up IR remote control. It will flash the on board sensor LED indicator. The other 10K variable resistor seems to control power to the flashing IR LED.
very good value for proximity detection, or sensing IR remote control (but not reading value from IR remote - just that it's on). I would recommend this product.
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