RFM69HW 433 communication problem

[sundberg84]

@gohan - If you have 3.3v on the radio and the arduino, are sure about the software/sketch then I would also suggest trying different antennas. What are you using today? I would buy a SMA connector and a good antenna. Even though I have the DIY antenna on the test-node above, I still have a factory antenna + SMA connector on the gw.

[Carywin]

I'm not very familiar with that hardware, but from a cursory glance it looks like you don't have the interrupt pin connected? Unlike the NRF modules, the RFM69s are interrupt-driven and need DIO0 connected to pin 2

[gohan]

I am waiting for the antennas and sma connectors too. Irq pin i think it is connected as it should be in the in the pcb.

[sundberg84]

@Carywin - its EasyPCB RFM edition and D2 is connected to DIO0 pin as described in the radio tutorial so unless he is using a strange RFM module with the interrupt pin on some different place that should work.

[Carywin]

Right, I'm sure that node is fine, I mainly just zoomed in and looked at this one:

I use this same small piggyback board for many nodes and it works great with those 21mm coil antennas.

However, I just noticed the #define for TX power. I think the H and HW versions have a minimum of 13dB or something. Have you tried without?

[Jokgi]

@gohan a straight pig tail antenna of about 30mm should work fine (but will not be perfectly tuned).

[gohan]

@Carywin I was using the nodes on easypcb also for the new ones. What do you suggest I set the TX power?

[sundberg84]

@gohan - i never messed with TX power... have a look and try my sketches above. They work for me.

[Carywin]

I would suggest comment out the TX power setting and let the ATC control it. If it still doesn't work, try:

#define MY_RFM69_ATC_MODE_DISABLED
#define MY_RFM69_TX_POWER_DBM 20

Edit:
Maybe also try

#define MY_DEBUG_VERBOSE_RFM69

and see if that tells you anything more.

[gohan]

If my headache gets better, I'll do some more tests tonight

[Jokgi]

@gohan If you are using AutoAcks and you have a combination of True Nordic based Modules and nRF24L01P clones you may have a issue. Is there a way to not use acknowledgements and see if you can communicate properly between the modules?

[gohan]

I'm using rfm69 not nrf24l01

[gohan]

I think i solved the mistery... the alixpress seller sent me RFM69W modules instead of HW... I just noticed the chips are the same and in fact they work if I compile the node without the #define MY_IS_RFM69HW. I don't even know if I can get a partial refund since quite some time has passed

PS :rage: :rage: :zap: :zap:

[sundberg84]

@gohan - so you got communication now that is working? That is great news.

[gohan]

Yeah... Not a good news that I got "scammed"

[sundberg84]

@gohan - nope its not! I hope you will get your money back!
But atleast you know you can make it work and how!

[gohan]

@sundberg84 the bad thing is that I was recommended to use that seller as a good one.

[sundberg84]

@gohan - did I ? Im sorry If i did...
My RFM modules have been working good and are as described.

[gohan]

No, it wasn't you.

[sundberg84]

I guess this isnt in question anymore but I just wanted to comfirm I have tested node and it works with HW version as well. I use the code above and just added

#define MY_IS_RFM69HW  // Mandatory if you radio module is the high power version (RFM69HW and RFM69HCW), Comment it if it's not the case