Simple Optical Communication using Arduino (UART)

To make the photodiode work, the pullup resistor in the Arduino must be disabled. This is done in the code shown in the video.

[TharhunyaSridhar]

Hello, Thanks for the video
May i know if the resister value for photodiode is 820 Kohm? according to the colour code is not the correct value. Can you please justify

[rkj.]

How to open both the COM ports at once?
I'm unable to open the serial monitor of both COM ports at once

[ANTONIORakotoarison]

thank you for this great video. Can explain how did you synchronious the two arduino at the transmeter to the receveir?

[osamamohamedmohamedshabana]

What can we add or replace in the electrical circuit so that the distance between the LED and the photodiode is as high as 1 meter?

[nedaa]

Hi, thanks for the videom I tried making this with arduino uno and photoresisters but it's not transferring any messeges ! what do you think could be the problem?

[TharhunyaSridhar]

May i know where to connect the PIN 13?, PIN 13 is written as output in the code

[VarunPrasaathKS]

Can LDR be used in place of photo diode? Kindly reply as early as possible

[vanmunch]

Thank you, this is really great. Do you know what photodiode and LED part number you're using? Hope you have a good day.

[lakshmilohithchowdary]

can you please tell me how to install step by step

[x-]

Hey can u please send me code I want it for my project