Introduction The nRF24L01+ 2.4GHz transceiver modules are cheap and very effective but I have come across a few Threads in which people were having trouble with them so I thought it might be useful to gather together in one place a basic step-by-step sequence for getting them to work. EDIT 03 Feb …

I would never advise to connect to pin 11,12 and 13, but to use the ICSP header instead. People should really stop using the UNO-pins in tutorials, there's so much more than UNO's today. With ICSP it works on a Micro, Leonardo, DUE, MEGA, Metro Express, Metro M4, Arduino Zero and so forth, yet it i…

Hello. Thanks for the help. Yes, you were right, I wasn't careful enough and I missed that line. Now everything is compiled and loaded on the board, but nothing happens, the transmitter does not transmit data. The TX LED on the transmitter does not flash at all, and the receiver does not give any si…

// EMITATOR #include <SPI.h> #include <nRF24L01.h> #include <RF24.h> RF24 radio(9, 10); // CE si CSN struct Coord { float ax ; float ay ; float az ; // ... // pad out to 96 bytes ( 3 * 32) }; Coord coord; void setup(){ radio.begin(); radio.s…

I didn't make it clear enough. This should appear in both transmitter and receiver: I've updated to make the total length 96bytes. struct Coord { float ax ; float ay ; float az ; uint8_t padding[84] // padded out to 96 bytes ( 3 * 32 bytes ) for 3 full length messages }; Also, on the rece…

Sorry for the inconvenience I'm causing you. I did as you said, I managed to transmit the data, but as you assumed there were problems with synchronization. I tried to add and remove delays, but it only got worse. In your last sentence you proposed a solution to solve this problem, but due to the l…

// EMITATOR #include <SPI.h> #include <nRF24L01.h> #include <RF24.h> RF24 radio(9, 10); // CE si CSN struct Coord { float ax ; float ay ; float az ; float gx ; float gy ; float gz ; float mx ; float my ; float mz ; float pr ; float tm ; float um ; float ab ; float…

OK. It looks like you have got a bit further. Yes, I meant that the 3 messages belong to a set. If one is lost, then we should discard all messages in that set. If we don't, there may be a synchronisation problem. A possible solution is to add an identification number to each package, but that solu…

I tried your code for the receiver, it doesn't show my data correctly and I thought changing the expiration time will help. I changed that time to 500 and indeed the data started to come in, without any other interference. For the experiment I disconnected the receiver from the power supply and conn…

Interestingly, it did not get a timeout so the data may have just been coming too fast. Try these delays on the transmitter side just to check the logic. There should be a 5 second delay between sets of 3 messages. If that doesn't give repeatable results there is then another problem. After that, …

Simple nRF24L01+ 2.4GHz transceiver demo

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Simple nRF24L01+ 2.4GHz transceiver demo

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