Hii everyone,

my project is about wireless sensor network using 3 nano considering it as slave and one UNO considering it as master, Data of the sensor is sent to master by a slave.

nano 1 connected with PIR sensor and data sent to nRF24L001 to master,
nano 2 connected with ultrasonic sensor and data sent to nRF24L001 to master,
nano 3 connected to flame sensor and data sent to nRF24L001 to master,

uno is connected with nrf24l001 and 3 led with LCD 16*2 display.

I have succeeded in sending data from a single sensor to receiver now the problem is how to club it together and make it master . can anyone help to solve this. suggestions

Welcome to the forum.

Please read the first post in any forum entitled how to use this forum.
http://forum.arduino.cc/index.php/topic,148850.0.html .

Have you googled;
nRF24L001 master multiple slaves

Thanks.. Tom.. :slight_smile:

Have a look at this Simple nRF24L01+ Tutorial.

Wireless problems can be very difficult to debug so get the wireless part working on its own before you start adding any other features.

The examples are as simple as I could make them and they have worked for other Forum members. If you get stuck it will be easier to help with code that I am familiar with. Start by getting the first example to work

It includes an example for a master and 2 slaves that can easily be extended to a larger number of slaves.