Ir comunication to send messages

Other Hardware Sensors
1

Hi, I'm a begginner in electronics. I'm trying to make this project: https://www.instructables.com/Arduino-Encoded-and-Modulated-Laser-and-Infrared-S/
I was wondering if there's any reason why this shouldn't work using ir transmitter and receiver modules instead of the laser and the photodiode.
The project states that this should also work with a visible light led and a photodiode but i don't understand why not with ir.
I tried using this ir receiver module (picture), i can see it receives something from the flashing of the module's led but nothing is printed in the serial monitor.

20230628_121827
20230628_1218271920×1080 69 KB

I'm really a noob so sorry if it's a stupid question or if it's something that just doesn't make sense.

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These modules only react on a carrier frequency of about 38kHz. Use the IRremote library to produce such signals.

You can use any light wavelength for communication with matching sender and receiver diodes - consult the data sheets. A modulated signal (with carrier frequency) can be used to suppress ambient light.

1 Like
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Thank you, I will try this!

4

IR remote control library

IR decoder library

I got those from here, there are more.

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