What hardware should i choose for this project

Projects General Guidance
1

Hi i hope someone can help me with to chose the correct hardware,

i has been reading on internet
but is very difficult to choose, wifi or RF or even if this is possible ,

Im very new in arduino, but i think is the best option for the project that i want to do.

it is very simple, One master that receive a signal and share it with other arduinos slave

attached an image, i hope explained correctly

Slide1.JPG
Slide1.JPG960×720 101 KB

Presentation1.pdf (174 KB)

2

Hi and welcome.

What is a "busser"? Did you mean "buzzer"?

What action is the Master Arduino performing? Is it simply acting as a central router for the messages? If so, it may not be needed, the slaves could maybe transmit direct to each other.

How many buzzers and leds does each slave have? 20 leds and 5 buzzers, 25 leds and 25 buzzers? 25 leds and 1 buzzer?

For RF communications, there are several modules that might be suitable. For example nrf24l01+

If the range is 30m without any walls or other obstacles, there are many types of rf module that should be able to communicate. 200m without walls will be more difficult. 200m with walls will be very difficult.

Tell us more about your idea, what you want to achieve instead of how you think you should try to achieve it.

Paul

3

Thanks

sorry yes is buzzer. im thinking 25 led and 1 buzzer per slave,

the project is neigborhood alarm

25 houses around 4 blocks (one slave per house), i was thinking wireless, but it could be wired.

4

I think wires will take a lot of work and a lot of cable!

300m though walls is not easy. I have never used a type of rf module with that kind of range for Arduino, but I have read about them.

Does each house have WiFi and internet connection?

A 2-digit 7-segment display may be easier to read than 25 individual leds. Is it likely that two slaves will be activated at the same time? If so, the display could flash their numbers in sequence. Also 16x2 lcd displays are very cheap.

I have to say, this project is not a good project for a beginner!

5

i underestand

most of the people are old, that is why i tough on led (simple), i think half of the people has wi fi, not 100% sure

iam a PLC and robot programmer but do it with PLC will be expensive, thats why im looking for an option

i will continue looking

i should buy a 2 or 3 arduinos and try ti

thanks