Tech Tear Down: TV Remote

TTD tv remote 2I found an old Philips TV remote and of course took it apart. Inside there was just a PCB underneath the rubber button mass. Each button is actually a capacitive sensor. When the rubber bottom of each button comes into contact with the cap, it changes the amount of capacitance. This signal from the remote is transmitted via an infrared LED that the TV picks up and decodes. The picture below shows the LED on the top of the PCB. It’s labeled IED1.

TTD tv remote

 

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s