pberrett
Posts: 51
Joined: Sun Jan 29, 2012 1:44 pm

Best/simplest method of transmission

Sun Sep 03, 2017 9:07 am

Hi all

I'd like to get reader's advice on the best way of implementing a project.

The part of the project I am trying to implement concerns wireless transmission of a number (a frequency) every second of so from an Arduino to a Raspberry Pi. The Raspberry Pi needs to be operating in a python program during the transmission.

The question is - what is the best hardware/software combination for reliably transmitting the number from the Arduino to the PI.

I started with a 433 mhz module combination and found some Arduino and python code for the PI. The transmission worked but was unreliable.

Next I have a couple of NRF24L01 modules. I found some code on the internet but it struck me as particularly complicated. I just want to send a single number.

I have since ordered a couple of SPP-CA Bluetooth serial modules which should arrive in a week or so.

And then there's the possibility of using 2.4ghz.

For a relatively simple task such as I have outlined above, what hardware /software combination do readers recommend for send a number periodically from the Arduino to the PI. By the way the Pi I am using is a Pi3 with wifi. Ideally the transmission should be reliably decoded. The distance involved is only a metre or two.

Thoughts?

cheers Peter

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davidcoton
Posts: 4259
Joined: Mon Sep 01, 2014 2:37 pm
Location: Cambridge, UK

Re: Best/simplest method of transmission

Sun Sep 03, 2017 10:46 am

Sounds like a Bluetooth application. The Pi3 has Bluetooth on board, so you'll only need a module for the Arduino end.
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bask185
Posts: 120
Joined: Thu Mar 09, 2017 11:39 am
Location: Netherlands

Re: Best/simplest method of transmission

Tue Sep 05, 2017 11:58 am

You need to buy either an Hc-05 or an Hc-6 bluetooth module for the Arduino. Using rfcomm you can connect to it.

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