IR train detection using the Sharp IS471 chip 
I mounted the IR LED on a par of wires instead of installing it on the board next to the sensor. The bottom of the hole with the IR LED had to be covered with black tape to prevent leakage of light.
I mounted the IR LED on a par of wires instead of installing it on the board next to the sensor. The bottom of the hole with the IR LED had to be covered with black tape to prevent leakage of light.
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Comparison of the two approaches for mounting the sensors and LED.
Comparison of the two approaches for mounting the sensors and LED.
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Three IR LEDS that can be used with the Sharp IS471. From left to right: QEC-113, 1N6266 and QED234.
Three IR LEDS that can be used with the Sharp IS471. From left to right: QEC-113, 1N6266 and QED234.
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