Difference between revisions of "Led sensor"
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(New page: According to [http://www.merl.com/reports/docs/TR2003-35.pdf this] paper, a simple led can be a light sensor if it used in reverse mode. In fact if led is used in invert, it become a varia...) |
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To test this phenomena , I used to pin of the FPGA, and design a little component that provide the discharging time in a register. | To test this phenomena , I used to pin of the FPGA, and design a little component that provide the discharging time in a register. | ||
| − | [[Image:ledtouchschema.png]] | + | |
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Revision as of 20:14, 3 August 2008
According to this paper, a simple led can be a light sensor if it used in reverse mode. In fact if led is used in invert, it become a variable capacitance.
To test this phenomena , I used to pin of the FPGA, and design a little component that provide the discharging time in a register.
