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    ripperle

    @ripperle

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    Best posts made by ripperle

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    Latest posts made by ripperle

    • RE: Alternatives for nRF24L01+ ?

      @manutremo said in Alternatives for nRF24L01+ ?:

      I went through a lot of problems when trying to build my network using the nrf24 modules. I jept using more and more powerful modules but never really managed to get a robust connection at all nodes.

      The nrf24L01 do not provide signal level reporting capabilities, so it's not easy to imagine what's oging on when communication fails.

      I finally understood by using the connection quality meter here. BY using I found that:

      • Increasing the power is sometimes a problem instead of a solution, since the nrf24L01 tend to overload at some point.
      • In my home there where "shadow" areas where the 2.4GHz simply didn't reach at a good enough level. I then checked the 2.4GHz signal from my router and found that it was also weak (not as weak as the nrf24L01, of course, but you could see the decrease).
      • Isolating the nrf24L01 by wrapping them on a plastic film foil and then another later of tin foil helped a litlle.

      From the results of my investigation I decided to move to using rfm69 modules, which have a better penetration power. They are working quite well, and certainly much better than the nrf24's.

      Maybe in your case it might be worth using a similar tool to understand what is going on.

      So I tested the new radio modules from Cde and of course the high power define in the code... I still have no stable network on all. Sensors! Sometimes a temperature sensor fail, sometimes a window sensor fail... Really annoying in winter when the heating control loop don't work...

      I will buy the rfm69 modules and try this ones...

      posted in General Discussion
      ripperle
      ripperle
    • RE: Alternatives for nRF24L01+ ?

      @gmccarthy said in Alternatives for nRF24L01+ ?:

      @ripperle I gave up with them and used a nodemcu with a esp8266 wifi module. Have been running without a hitch for months now.

      My sensors are battery powered (I also did many test with stable power supplys and had the same connection problems after a few days or weeks...)

      @Nca78 said in Alternatives for nRF24L01+ ?:

      @ripperle said in Alternatives for nRF24L01+ ?:

      Sometimes they are running for weeks and then stop working for a day or so and then start working again.

      Has somebody the same experience?

      This is a radio link quality problem.
      Replace your gateway radio with this PA/LNA module from CDEbyte, make sure script is compiled with #define MY_RF24_PA_LEVEL RF24_PA_MAX and it should solve your problems, it has worked for anyone else who tried.
      https://www.aliexpress.com/item/E01-ML01DP5-Ebyte-2-4GHz-20dBm-2100m-nRF24L01-SPI-Wireless-transceiver-module/32638720689.html

      I already upgraded the gateway with a PA/LNA
      But not with the MY_RF24_PA_LEVEL RF24_PA_MAX option... Although I ordered 2 PA/LNA transmitter from CDEByte... Let see if it works...

      By the way, my bathroom sensor (staple power supply, no battery 1 room away from gateway) stopped working a few days ago after many weeks without any problems... Yesterday it come back to life by itself and works... SOOOOOO STRANGE...

      I dont understand, why a sensor works for weeks or months without problems and then stop working for a day or 2...

      Thanks for your advises...

      posted in General Discussion
      ripperle
      ripperle
    • RE: Alternatives for nRF24L01+ ?

      @gmccarthy said in Alternatives for nRF24L01+ ?:

      So after a month or two of fiddling I've had enough of the unstable nRF24L01+.
      Been trying all sorts of tricks to try and these things working - the range is useless and everything I try doesn't seem to help.
      Tried nRF24L01+, nRF24L01+ PA, capacitor, making sure its a stable 3.3V, extending antenna on nRF24L01+, used tin foil to stop noise, change channel numbers, transfer speed, nothing seems to help. Trued multiple devices - no go.
      They only seem to work right next to each other. Going through 2 rooms is impossible. Sometimes it works, then it loses comms for 30 mins.
      Today I tried replacing gateway and sensor with PA - range is even worse
      Thinking of tossing them all out and going XBee. Expensive but its bound to be rock stable.
      Read through so many posts on how to extend the range and am wondering if I'm the only one having headaches.

      I have absolutely the same experience with my temperature sensors!
      I use the DHT22 and the HTU21 sensors. Sometimes they are running for weeks and then stop working for a day or so and then start working again.

      Has somebody the same experience?

      posted in General Discussion
      ripperle
      ripperle