Hello i was wondering if it is possible to get multiple bluetooth connections. my project coming up is i would like to connect multiple bluetooth devices to chat with each other. i know blue tooth is short range and that is okay.
Hello What I'm trying to do is Broadcast a text message from one Arduino and receive on 2 cellphones using bluetooth as receiving only. Is there a possible way of doing it?
Bluetooth is a paired protocol so master & slave devices have to be paired together to talk. Broadcasting from one master to multiple slaves only works if the master connects to each slave device in turn and sends the same message. This will obviously result in some delay as it connects/sends/disconnects from each slave device in turn.
Hello Riva thank you for the information. So If i was to have 2 cellphones sense they are connecting to the arduino then the cellphones would be the master and the arduino bluetooth would be the slave correct? Or is it the other way around?
If you are using the phone as a phone, I believe it is the other way round. This is like you car sniffing for paired phones when you turn the engine on.
If you are using an app in a smartphone, the phone is the master and makes the connection. Don't expect to find an app that will connect with more than one device.
If you want to make a multi-point network, it would be better to leave the phones out of the game. Leaving bluetooth out of the game might be a good idea as well. I submit you will be better employed looking in to the NRF24, which has about the same price and performance as bluetooth but is actually designed for the job.
Hello Nick i have a pair of phones that are disconnected from the gsm network so they are sitting around doing nothing I would like to pair them up to give to my kids so i can send them messages. I was thinking of using a arduino as the server master part and the slave as the cellphones?
I don't think so. You don't differentiate between a smartphone app and the cellular network. You appear to be wanting to set up your own private phone network with bluetooth but the bluetooth in a phone essentially serves as merely a microphone/earpiece substitute for using the normal phone network.
If you want to use a smartphone app, the exercise is the same as it always is - find the app first.
I rather suspect that the best thing to do is put the phones back on the GSM network.
Hello I don't know as a private network. Just send text message that's all
Private network is 2 way send and receive but I'm not receiving back to the arduino or sending messages back and forth from one cellphone to another I have 2 cellphones that are not connected to gsm anymore meaning there not being used for nothing and sitting there doing nothing i tohught it be nice ot make them as a project where they can receive some text message from the arduino.
Read the second sentence of my previous. It would be a good idea to do this at least six times.
If your phones are retired smartphones, arduino can send messages via bluetooth all day, simply by sending a message to a bluetooth terminal. It still isn't a good idea, indeed it's a pretty bad one but it can be done, and it has nothing to do with the phone system. Having said that, retired smartphones are pretty useful in the arduino world as bluetooth controllers and terminals in projects more practical than that which you propose, so don't throw them away.
Private network is just what it says. Two-way traffic is not a criterion.
Hello nick thank you i kind of didn't understand your other post. Thank you for explaining it to me. Okay bluetooth may not be the smartest thing to use or maybe the best I'm still looking into other things. As far as putting the cellphones back on the gsm network there older phones of my well i upgrade mine to newer one thought my cellphone company. So these are my old ones. Only 2 things well maybe 3 things i can do with them Either use bluetooth or wifi the thing is like i been doing is playing games on them LOL.
Hello i have refocus my thoughts on this whole multiple blue tooth client side. And I move passed that. So what I'm asking is that If anyone know what is the Best Low power blue tooth module that i can use on my arduino project? I have a hc-05 and Hc-06 both take a lot of power. So Now I'm looking for a lower power blue tooth if anyone knows of any please let me know thank you.
HM-10 is a BLE device - bluetooth low energy. The power consumption is much less than the HC-05 but it is essentially a drop-in replacement of same. Note that a BLE device only works as a BLE device when it is talking to another BLE device. If it is talking to an HC-05 or any BT-2 device, it works like a BT-2 and hogs power.
Hello Nick thank you. Well it's just going from Bluetooth module to cellphone to receive some data that is all. But if it is a older Cellphone Is that a problem?
Very likely - on two counts.
First If it is old it probably isn't BLE
Second If your phone is just a dumbphone it will probably not talk to an Arduino, no matter what sort of bluetooth you are using.
Hey nick right now I'm using bluetooth on the with a arduino app i found online i can turn on and off leds and read values from the arduino. Also i can send a text message from the arduino and read it on the phone app.
I would love a small app, that lets me talk ble tooth to computer and ardunio.. I have 2 hc-5 if you can send me code that would be great...