A necessity in our life, “remote control”. TV, DVD player, air conditioner, and audio; we can’t live without remote controls.
Sometimes they don’t work but by hitting them, they start working again LOL.
Even when you change the batteries of a remote, it doesn’t work, and you wonder what’s the problem?
Is it broken or not?
You can’t tell because you can’t see the radio wave.
But don’t give up yet!
The blog I read the other day tells amazing trick to check if a remote control is working.
For this trick, you use a cell phone.
Open the picture mode and point the edge of the remote at the camera lens.
Not pressing the button of the remote.
Pressing the button of the remote.
It lights up, so you can tell that the signal is working.
I actually tried this trick with my cell phone and it lit up!
It is amazing! 😯
I wonder how it works! You should try it!
Source: Daily Portal Z
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Almost all modern remote controllers use infrared light – rather than radio waves – to send the signal to the controlled device. The reason the cell phone trick works is because the phone’s camera is sensitive to light waves that include the controllers’ infrared frequencies.
The cell phone camera sees the light the human eye can’t, then displays it in a way the eye CAN see it! It IS amazing.
Thank you for your explanation. It was so mystery to me but now I kind of know how it works!
Dou itashimashite!