Arduino to Arduino via Bluetooth

Projects General Guidance
1

Hi,

I have 2 arduinos comunicating via 433MHZ TX/RX, but I'm quite tempted to switch to bluetooth because the 433MHZ is giving me some incompatibility problems with other sensors..
the problem I know with bluetooth is the distance, but it's not a problem for me because it's only 4 meters in open space..

Do you see any problem with 24h/7 days comunications between 2 arduinos via bluetooth?

thanks!

2

On the face of it, it seems a misplaced application, and just using a cable might be a better option, but thew only problem with continuous operation would be the maintenance of power.

3

Nick_Pyner:
On the face of it, it seems a misplaced application, and just using a cable might be a better option, but thew only problem with continuous operation would be the maintenance of power.

Where the arduinos are installed I don't have the option to wire them together, it really needs to be wireless.
And between 433MHZ and bluetooth the bluetooth seems the better choice. I can have them always on "standby" and when wanted the master requests data to the slave and it sends back...

4

I submit Bluetooth is better employed connecting to the outside world and 433 or nrf24s more suitable for Arduino<>Arduino. Having said that, Bluetooth is not impossible

but, since you have the 433s, you might be better off sorting out the problem - which might be trivial.

Whatever is stopping you from making a cable connection, might stop you from using bluetooth. It doesn't take much.

5

Nick_Pyner:
I submit Bluetooth is better employed connecting to the outside world and 433 or nrf24s more suitable for Arduino<>Arduino. Having said that, Bluetooth is not impossible

Phillipe Cantin: HC-05 Bluetooth link of 2 Arduino

but, since you have the 433s, you might be better off sorting out the problem - which might be trivial.

Whatever is stopping you from making a cable connection, might stop you from using bluetooth. It doesn't take much.

first, thanks for your help!
my problem with 433mhz is that I have the TX transmiting every 5minutes. And when it transmits the RX sometimes is busy with some parts of the code and doesn't receives the code. Is there any way to avoid this?
with bluetooth i can request the values and wait to receive them....

6

sometimes is busy with some parts of the code and doesn't receives the code. Is there any way to avoid this?

I'm sure there is, and the word "sometimes" suggests the solution isn't far away.

I'm not familiar with 433s but I'm afraid I fail to see the distinction here. A request for data is a request for data and should be essentially the same, irrespective of the means of wireless transmission. It seems that you are looking for a hardware solution to a software problem.