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IR Remot controle

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555 timer chip guy:
I am having some trouble with making a 38 KHz transmiter I am using a 555 unstable oscillator circuit but for some reason my 38 KHz receiver is not picking up the signal but works fine with a standard TV remote. Dose any one have a suggestions.

dunk:
many ccd cameras can see infared light.
find a camera that can see your tv remote and compair the brightness of your circuit.

dunk.

Kohanbash:
A lot of time on higher end cameras there is an IR filter that can be removed.

hgordon:
You need an oscilloscope to view the waveform of the IR emitter circuit.  Look for a Radio Shake ProbeScope -

    http://www.linuxtoys.org/pscope/pscope.html

or do a web search on serial port / USB oscilloscopes.  If you are building your own circuits, you won't use an oscilloscope too often, but when you need it, there is no better tool for sorting out waveform problems.

555 timer chip guy:

--- Quote from: hgordon on March 16, 2007, 09:10:46 AM ---You need an oscilloscope to view the waveform of the IR emitter circuit.  Look for a Radio Shake ProbeScope -

    http://www.linuxtoys.org/pscope/pscope.html

or do a web search on serial port / USB oscilloscopes.  If you are building your own circuits, you won't use an oscilloscope too often, but when you need it, there is no better tool for sorting out waveform problems.

--- End quote ---
I have an oscilloscope but it can only read up to 5 KHz and the only oscilloscope that I fond that can read 38 KHz is $400.

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