LEDs double as sensor and light emitter
https://pachube.com/feeds/37411
https://pachube.com/feeds/37411
Feed description:
The project is Using LED as both light emmiter and light sensor. When LED as a sensor, the voltage of the LED will be change while it receiving the reflected light. The feed shows the output data from the arduino digitalport that is actually the voltage of the Led, we can detect if there is light reflect back to LED by sensing the output voltage.
S.W.O.T analysis
Strengths: Using LEDs as light source is really an energy saving idea. And it is more interesting that the LEDs in themselves are sensors. Other than using temperature sensor or infrared sensor, Leds can interact with user just by itself. compare to normal sensors that just get information from the user, the LEDs emit light only a very short time but in high frequency which can be regard as giving information to the user and then sensing if any information sent back.
Weeknesses: The data is as low around 50 or as high around 1000, but in between there is very rare data appears. The data has a very wide range with a really big gap in it.
Opportunities : make LED as both sensor and light emitter can be used to build interactive panel or interactive wall. It is low energy light source when there is no ristrict of light intensity and it is a creative way in decoration.
Threats: It might be affected by other light which contains same spectrum as the LED, this makes the LEDs hardly to know if there is an user cover the light or just other light sources affection.
The project is Using LED as both light emmiter and light sensor. When LED as a sensor, the voltage of the LED will be change while it receiving the reflected light. The feed shows the output data from the arduino digitalport that is actually the voltage of the Led, we can detect if there is light reflect back to LED by sensing the output voltage.
S.W.O.T analysis
Strengths: Using LEDs as light source is really an energy saving idea. And it is more interesting that the LEDs in themselves are sensors. Other than using temperature sensor or infrared sensor, Leds can interact with user just by itself. compare to normal sensors that just get information from the user, the LEDs emit light only a very short time but in high frequency which can be regard as giving information to the user and then sensing if any information sent back.
Weeknesses: The data is as low around 50 or as high around 1000, but in between there is very rare data appears. The data has a very wide range with a really big gap in it.
Opportunities : make LED as both sensor and light emitter can be used to build interactive panel or interactive wall. It is low energy light source when there is no ristrict of light intensity and it is a creative way in decoration.
Threats: It might be affected by other light which contains same spectrum as the LED, this makes the LEDs hardly to know if there is an user cover the light or just other light sources affection.
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