Today I wanted to test out the infrared receiver. This is the datasheet. It’s got an internal 38kHz frequency filter so that it specifically picks up signals from a tv remote.

I decided to test it before mounting it to the board by soldering wires to it and measuring the signals. But it’s only 3.95×3.95mm large! After a lot of messing around with a soldering iron, I eventually had this.

The small shiny bit of plastic is where the light enters the chip
The small shiny bit of plastic is where the light enters the chip

I connected up a 3.3V power supply and put my oscilloscope on the output. The output looked identical to the signals from the IR receiver in my Infra-red Repeater Mini-project, so it looks like it’ll be just fine for this project.

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