Hello!
I am working to my project( a wireless controlled robot, which send information via wireless), and i chose two nRF24L01 modules, and two arduino uno. To establish a transmission I followed this tutorial, nRF24L01 and UNO R3 Tutorial - Project Guidance - Arduino Forum , but all I can see in Serial Monitor is : "No radio available", and the led stay off. I tried to modify the program, to send a letter via serial, but this is in vain. The transceivers do not communicate. Because, as I read, the transceivers needs at least 100mA, I supplied them from two AA alkaline batteries in series(3.2 V) for the receiver and a DC 3.3V(which can afford over 1A) source for transmitter. I checked the links for 3 times. But nothing happened. (I mention that I made the links between the GND of arduino, GND of RF module and GND of battery/source for RX and then for TX). But no result. Please help me!!! I just can't find a solution.
Any help please?
Did you double check the wiring? Did you use any decoupling capacitors for both rf modules? If not, wire a 100nF capacitor between Vcc and GND of each module.
I did not use capacitor. I will try your advice. Should I use a polarysed one or it doesn't matter? Where should i put the capacitor? Is it right on the breadboard or directly soldered on the module?
Use an Elecrtolytic Capacitor. The closest to the module, the better.
BTW, I'm trying two weeks now to make my modules work with the RF24 library and can not get them to.
When I use the MIRF library, it all goes well. You may want to try that library as well. You will find it in Arduino playground...
Ok. Thank you for this. I used RF24 library, too. I will try with Mirf, and come with results.
Hello. I tried your solution. I used 470n electrolytic capacitors, but no result. I also used the getting started example but the modules does not work. I read that RF24 library is more stable than Mirf's . I also wanted to try Mirf's one but I wasn't able to find a code. I don't know why RF24 does not work.
any ideas?