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For my final assignment i developed a LED pulse metering sensor. The sensor is made out of a bright LED, a photocell, two 546B transistors, some fixed resistors, a variable resistor (potentiometer) and an array of 9 LED which flash when blood goes to your fingertip. | For my final assignment i developed a LED pulse metering sensor. The sensor is made out of a bright LED, a photocell, two 546B transistors, some fixed resistors, a variable resistor (potentiometer) and an array of 9 LED which flash when blood goes to your fingertip. | ||
[[Image:Sketch_fingerclamp_1.jpg]] | |||
<videoflash type="youtube">KmyUX5ywaMg|700|450</videoflash> | <videoflash type="youtube">KmyUX5ywaMg|700|450</videoflash> | ||