ali_sami Posted March 8, 2004 Report Share Posted March 8, 2004 hi,i want to measure the infrared light intensity with an infrared sensor and obtain an analog output proportional to the light intensity. would it be possible for a distance of 1.5-2 meters ? Quote Link to comment Share on other sites More sharing options...
mixos Posted March 8, 2004 Report Share Posted March 8, 2004 This is possilble for 1.5-2 meters using an infrared led for the detection, like this circuit is using:http://www.electronics-lab.com/projects/science/003/index.htmlAlternative you can use TSL245 from Texas Instruments which is infrared light-to-frequency converter and then convert the frequecny to voltage and have the reading in a voltmeter. Quote Link to comment Share on other sites More sharing options...
ali_sami Posted March 9, 2004 Author Report Share Posted March 9, 2004 do you have any information about tsl245's cost ? Quote Link to comment Share on other sites More sharing options...
mixos Posted March 9, 2004 Report Share Posted March 9, 2004 I just noticed here:http://focus.ti.com/docs/prod/folders/print/tsl245.htmlthat it is discontinued, but you may find it in stock, I don't know the price.. Quote Link to comment Share on other sites More sharing options...
electrodoc Posted March 17, 2004 Report Share Posted March 17, 2004 find schemetics for a tatung 'D' series television and look at the infrared reciever section there you'll findn i/r reciever with 3 pins +5volts, ground and output. these cost Quote Link to comment Share on other sites More sharing options...
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