Topics created by Frederic Schaer

@Frederic-Schaer said in Found my cause of gateway <-> RF24 connection issues (sign fail / NACK issues): Surprisingly, setting mysensors RF24 channel to 100, or even 123... did not help at all even if as I understand it, these should be outside of the wifi channels used in France (??) I found in the past that channels 100 and above are hardly usable with most nrf24 modules. Might be caused by bad antenna tuning, or fake chips, I'm not sure... Last thought : how is it possible that a consumer wifi AP (my neighbor's "FREEwifi" DSL box) is spanning over more than half the 2.4GHz spectrum ? isn't that extremely selfish ?? Yes, it seems to depend a lot on the hardware. I'm using ubiquity access points only nowadays which are very narrowbanded. Neighbouring access points delivered by internet hosters transmit a much broader spectrum. Worst of all seems to be my kids' Nintendo switch console which distorts the complete 2.4 wifi spectrum... Here you see the output of a channel scanner I'm currently working on, over the course of some 5 days: The vertical axis is nRF24 channels. My AP close to the scanner occupies channels 55..68, while e.g. there's also the much broader signal at channels 23..50. From channel 85 and above it's relatively quiet.

Recheck all your Nano connections. I think you still have the pin numbers and names mixed up. You will see almost all designs reference the pin name, because that ties back to the function in the microprocessor. Your IRQ should be D2 for example. Grab a Nano pinout from the web. You want to align the CSN, MOSI, MISO, SCK, to the corresponding digital pins for the Nano. You will also see pins with functions INT 0 and INT 1 Your IRQ has to go to one of those. Look at the MySensors "How to wire the radio" page. It has the pins that are most normally used. Welcome to the club. You can do some pretty amazing boards in KiCAD once you get the hang of it. PS. If you are in the US, check out oshpark for some prototypes. 3 boards for $9 if they meet the size requirements, and they are faster than delivery from China.