Laser transmitter and receiver

I'm doing my university mini project, and I have decided to make a laser transmitter and receiver to transmit and receive sentences only and review it on I2C SCREEN
I don't know what to use as a receiver (LDR or photodiode) and what is the main idea to program the receiver and the transmitter
And thank you.

I don't know what to use as a receiver (LDR or photodiode) and what is the main idea to program the receiver and the transmitter

What experience of electronics and programming do you have ?

I have decided to make a laser transmitter and receiver to transmit and receive sentences only

How can you transmit and receive sentences, without transmitting and receiving words?

How can you transmit and receive words, without transmitting and receiving letters?

I don't know what to use as a receiver (LDR or photodiode)

How fast is a LDR at reacting to changes in light level? What frequency does the LDR detect? What did Mr. Google tell you?

This Thread about serial comms using IR may be helpful.

...R

Not to forget: what distance does the message have to be transmitted over?

There are several examples of this online already

Adding I2C display would be a new addition to the projects.