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: 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. :)

Thank you and sorry for my English.

Try reading this as starting point.

First, your English is fine.

Next, I followed 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:

I tried to follow this site you recomended 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: 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 :~

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:

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 or 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.