RF24MESH NOT WORKING

[ajinkyaw]

I have developed a program for Master and Slave devices using NRF24L01 Devices. I am using RF24MESH Library to achieve my requirements. Till yesterday everything was working but all of a sudden from morning it is not working. I tried to use the RF24MESH_MESH_EXAMPLE_MASTER AND RF24MESH_EXAMPLE , which i was used to TEST if NRFs are working or not. This example is also not working now. The Slave is not be able to connect to the Master. I tried to run ping-pair example, It is working fine.

Please guide me to solve this issue. Note ; I have connected 470uF cap on Nrf's terminals.

[Avamander]

This example is also not working now.

Check the connections to the modules.

[ajinkyaw]

hi. Its been working since many days till this morning. All connections are ok. Also i tried to get the radio,begin() results those are also true.

[Avamander]

Clearly something in your setup has broken itself. I've heard the "The connections are OK" talk so many times with it all ending up with "Whoops, turns out one wire had come loose." or something like that.

Upload the pingpair_ack sketch on both devices and paste the result here please.

[ajinkyaw]

Device 1

RF24/examples/pingpair_ack/

ROLE: Pong back *** PRESS 'T' to begin transmitting to the other node STATUS = 0x0e RX_DR=0 TX_DS=0 MAX_RT=0 RX_P_NO=7 TX_FULL=0 RX_ADDR_P0-1 = 0x544d52687c 0xabcdabcd71 RX_ADDR_P2-5 = 0x33 0xce 0x3e 0xe3 TX_ADDR = 0x544d52687c RX_PW_P0-6 = 0x01 0x01 0x20 0x20 0x20 0x20 EN_AA = 0x3f EN_RXADDR = 0x3e RF_CH = 0x4c RF_SETUP = 0x07 CONFIG = 0x0f DYNPD/FEATURE = 0x03 0x06 Data Rate = 1MBPS Model = nRF24L01+ CRC Length = 16 bits PA Power = PA_MAX

Device 2

RF24/examples/pingpair_ack/

ROLE: Pong back PRESS 'T' to begin transmitting to the other node STATUS = 0x0e RX_DR=0 TX_DS=0 MAX_RT=0 RX_P_NO=7 TX_FULL=0 RX_ADDR_P0-1 = 0x544d52687c 0xabcdabcd71 RX_ADDR_P2-5 = 0x33 0xce 0x3e 0xe3 TX_ADDR = 0x544d52687c RX_PW_P0-6 = 0x01 0x01 0x20 0x20 0x20 0x20 EN_AA = 0x3f EN_RXADDR = 0x3e RF_CH = 0x4c RF_SETUP = 0x07 CONFIG = 0x0f DYNPD/FEATURE = 0x03 0x06 Data Rate = 1MBPS Model = nRF24L01+ CRC Length = 16 bits PA Power = PA_MAX CHANGING TO TRANSMIT ROLE -- PRESS 'R' TO SWITCH BACK Now sending 1 as payload. Got response 1, round-trip delay: 7084 microseconds

Now sending 2 as payload. Got response 2, round-trip delay: 1528 microseconds

Now sending 3 as payload. Got response 3, round-trip delay: 584 microseconds

Now sending 4 as payload. Got response 4, round-trip delay: 1048 microseconds

Now sending 5 as payload. Got response 5, round-trip delay: 2920 microseconds

Now sending 6 as payload. failed. Now sending 6 as payload. Got response 6, round-trip delay: 588 microseconds

Now sending 7 as payload. Got response 7, round-trip delay: 1972 microseconds

Now sending 8 as payload. Got response 8, round-trip delay: 2452 microseconds

Now sending 9 as payload. Got response 9, round-trip delay: 1048 microseconds

Now sending 10 as payload. Got response 10, round-trip delay: 1048 microseconds

Now sending 11 as payload. Got response 11, round-trip delay: 584 microseconds

Now sending 12 as payload. Got response 12, round-trip delay: 584 microseconds

Now sending 13 as payload. Got response 13, round-trip delay: 1048 microseconds

Now sending 14 as payload. Got response 14, round-trip delay: 2448 microseconds

Now sending 15 as payload. Got response 15, round-trip delay: 4760 microseconds

Now sending 16 as payload. Got response 16, round-trip delay: 584 microseconds

Now sending 17 as payload. Got response 17, round-trip delay: 1080 microseconds

Now sending 18 as payload. Got response 18, round-trip delay: 1048 microseconds

Now sending 19 as payload. Got response 19, round-trip delay: 2452 microseconds

Now sending 20 as payload. Got response 20, round-trip delay: 1508 microseconds

Now sending 21 as payload. Got response 21, round-trip delay: 1044 microseconds

Now sending 22 as payload. Got response 22, round-trip delay: 580 microseconds

Now sending 23 as payload. Got response 23, round-trip delay: 576 microseconds

Now sending 24 as payload. Got response 24, round-trip delay: 1044 microseconds

Now sending 25 as payload. Got response 25, round-trip delay: 7088 microseconds

Now sending 26 as payload. Got response 26, round-trip delay: 2916 microseconds

Now sending 27 as payload. Got response 27, round-trip delay: 1528 microseconds

Now sending 28 as payload. Got response 28, round-trip delay: 576 microseconds

Now sending 29 as payload. Got response 29, round-trip delay: 1532 microseconds

Now sending 30 as payload. Got response 30, round-trip delay: 1508 microseconds

[Avamander]

The variance in the round-trip delay and the high lost packet rate signifies that there is some problem in the system. Do try to increase decoupling to 10 000uF (and a small ceramic capacitor to counter the big inductance of the electrolytic capacitor). You can also try and increase the power a bit. Also make sure you aren't using long wires (for ex. a ribbon cable) to connect your modules.

[ajinkyaw]

I have developed my own pcb . On NRF terminals i have connected 470uF cylinder capacitor and 104 pF ceramic capacitor too. I will try to increase to 10,000uF but after doing a lot of research on internet i have found this pair of 470uF and 104pF to connect to terminals. This system was working fine since last 7 days , today morning only something has happened.And i am not be able to find it.

[Avamander]

today morning only something has happened.And i am not be able to find it.

Yeah then it's probably some environmental change. There's nothing I/this library can do against that.