Test your TV remote control without building any additional circuit.A TV remote emitts infrared radiations from the IR LED present in front of it.The only thing required is a mobile phone with camera which many of us have now-a-days.switch on the camera of mobile phone, put the remote control infront of the mobile in such a way that the IR LED faces the camera and press any button on the remote.you will see a bright flicker on the view finder of the camera.this indicates that the remote is working.
(see the image below).
NOTE: it is not possible to test a bluetooth or RF remote using the above method
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