NRF24L01 Broadcast

Projects Programming
1

Robin2:
Properly arranged, and with good quality wireless devices, you should get a longer range at 433MHz compared to 2.4GHz.

Have a look at this Simple nRF24L01+ Tutorial

...R

Sir i have a question that this nrf24L01 module can act as a transmitter to many receivers at the same time????? I.e. all the receivers with the same receiver address i.e. the same pipe address will receive the string from single nrf24L01 module ???.... is that possible....so as to make a star network of such nodes ????

2

apoorvarampal:
Sir i have a question that this nrf24L01 module can act as a transmitter to many receivers at the same time????? I.e. all the receivers with the same receiver address i.e. the same pipe address will receive the string from single nrf24L01 module ???.... is that possible....so as to make a star network of such nodes ????

This seems to be a completely new subject so I am suggesting to the Moderator to move it to a new Thread.

If several receivers are listening on the same address and the same channel they will all pick up a message sent to that address.

However you must ensure that the auto-acknowledgement is turned off for all of the receivers and for the transmitter, otherwise they will all send an acknowledgement causing a garbled message so the transmitter will think the message failed.

You could, perhaps allow auto-acknowledgement on the transmitter and on just one of the receivers.

In saying all of the above, I am assuming that you do NOT want the receivers to send data to the transmitter. You have not described the project that will be using this wireless connection.

...R
Simple nRF24L01+ Tutorial

3

Thread split.

4

Sir, I want to connect ESP-12(WIFI ESP8266) nodeMCU, arduino uno and nrf24l01 together such that:--

  1. nodeMCU will fetch data from database.
  2. that fetched data is then transferred to arduino and arduino will transfer the data to connected nrf24l01 module which will then broadcast the message to other slave nodes.

My nodeMCU is able to fetch data from database, now I want to fed that data to arduino and nrf24l01 arrangement to process that data.
The problem is that when I am using ESP-12 nodeMCU and nrf24l01 in same code my nrf24l01 stops functioning.
So. the question is , I want to use ESP-12(WIFI ESP8266) nodeMCU, arduino uno together in same code.
How can I do it ???

5

apoorvarampal:
The problem is that when I am using ESP-12 nodeMCU and nrf24l01 in same code my nrf24l01 stops functioning.
So. the question is , I want to use ESP-12(WIFI ESP8266) nodeMCU, arduino uno together in same code.
How can I do it ???

As you have not posted your programs or a diagram showing how you have everything connected I don't know how to help.

I presume you understand that an ESP8266 cannot communicate wirelessly with an nRF24L01.

...R