Nrf2401

Using Arduino Sensors
1

Hi everyone!
I started working with arduino recently so i'm kinda newbie on this subject (I also don't speak English as my main language so it will might be a little hard to explain myself)
I own 2 Arduinos and I want to send a message between them. I have the Nrf2401 and i followed this site: Arduino Playground - Nrf2401
I copy paste the code and followed the pin connections:

  • DR1 –> 2 (digital pin 2)
  • CE –> 3
  • CS –> 4
  • CLK –> 5
  • DAT –> 6

The GND is connected to ground and the VCC to 3.3V.
I also notice in the code this: Radio.remoteAddress = 1; And i realise i don't have nothing connected to pin TX->1. But i don't know what to connect to it either.
I don't get any responses from neither arduinos.
I hope you guys can help me. :slight_smile:

Thank you and sorry for my English.

2

Try reading this as starting point.

http://arduino-info.wikispaces.com/Nrf24L01-2.4GHz-HowTo

3

First, your English is fine.

Next, I followed RF24Network for Wireless Sensor Networking | maniacbug to get my first pair of NRF2401's to talk. That example worked perfectly on the first try. It is explained well.

The code I used is here: http://maniacbug.github.com/RF24Network/examples.html

4

I tried to follow this site you recomended Getting Started with nRF24L01+ on Arduino | maniacbug and my main problem is the hardware.
In that site it says:
GND GND
3V3 3V3
CE 9
CSN 10
SCK 13
MOSI 11
MISO 12

Thing is, in my sensors i don't have such name as MOSI or MISO. I have this one: https://dlnmh9ip6v2uc.cloudfront.net/images/products/1/5/2/00152-04.jpg
And I don't know where to connect those...

Crossroads, I already read that doc you suggested and i'm grateful. But my problem is the hardware. I've never worked with arduino before and i don't know which pins I have to connect to :~

5

I didn't read closely enough to see the version you have uses different pin designations than the kind I have. Perhaps this link will be more helpful:

https://forum.sparkfun.com/viewtopic.php?t=14210

Both operate more or less the same way, differing only in how the I/O pins are controlled. Until now, I didn't realize the nRF2401A and nRF24L01 had different interface signals.

If you can't get your modules to work, I would really like to suggest getting the newer nRF24L01 modules. They can be found for $1.50 to $2.00 -- far cheaper than the sparkfun modules -- either on eBay or aliexpress.com or electrodragon.com. I can vouch for reliability buying from any of those sources, having used them all several times. It might take a couple weeks to get the modules but for me it is worth it to save lots of money.