Using Arduino Mega 2560 RE as Fiber Optics Transceiver

Projects Programming
1

Hi, I'm new to programming and Arduino. I'm seeking help on how to program my device
I'm working on a device that uses Arduino mega as Transceiver, Ky-008 laser emitter, ky-108 photoresistor, Qapass Arduino lcd I2C module, and 3x4 matrix keypad membrane as input device since I'm gonna use ASCII code to send message.

2

Your topic does not indicate a problem with IDE 2.x and therefor has been moved to a more suitable location on the forum.

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3

Install the keypad library using library manager and study the examples.

Install a LiquidCrystal_I2C library using library manager and study the examples. The HD44780 by Bill Perry is often advised. If you use another one, be aware that there is a variety of LiquidCrystal_I2C libraries; you need to base your code on the examples that come with the library, not on code that you found somewhere on the web because it might be based on a different library.

Search for examples on the web for the other components and study them.

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4

Photoresistors are too slow to use as detectors in fiber optic receivers. You need a photodiode-based circuit with amplifier.

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5

Thank you for the tip

6

Thank you sir

7

What type of optical fiber do you intend to use? Multimode or monomode?

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8

Duplex multimode Fiber, so the 2 transceiver can transmit and receive data simultaneously

9

First you need a 850nm or 1300nm LASER if you want to use multimode
Of course you will need the correct wavelength receiver.

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10

An LED will work with multimode fiber for reasonable transmission distances.

Something like this makes the implementation trivial.

11

10 meters?

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12

you mean 10 km?

13

The link I supplied claims 10km.

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14

No.

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It uses 1310nm LASER not a RED LED

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16

Have to admit that I didn't check in detail. Where does it say a laser diode and not an IR LED?

17

Never mind, it claims SM fiber:

image

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18

yes sir, I made sure that my laser is in between 850nm to 1300nm

19

I appreciate the all information that you all provided :smile:

20

I don't have any libraries installed in my IDE. Could you please recommend any libraries that I can use? :smile: