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.