Hi There.I'm ready to develop a system involving some sensors distributed which would be sending their reading to a "central" node and after investiganting the different options I am a little confused.Options I see: RF24L01 (w and w/o PA+LNA), RFM22, ZigBee, and LoRa, mainly.I see they are all basically Low Power modules that would let me send and receive some payloadBut my confusion comes here in the differences between them all.Are they a point to point (like a transparent serial line) RF line? Or can they receive from different modules at the same time?I see Lora is mainly used in LoRaWan protocols, which seems to work to connect singular devices (mostly IoT) to a main gateway (like in the city, unfortunately in mine there's no endpoints). Can I still use LoRa as a normal device "interconnection" system so all the devices talk to a central point (and then the centrl point has the WAN interface -Wifi or Sigfox- to the world)?In my scenario, where I would have like 5-10 devices reading a parameter every 10 minutes and a central gateway which would listen to the remote devices and forward the reading to "the cloud", which system would you use to communicate them all? I'm now biased towards nRF+PA+LNA but I don't understand the channels/pipes relationship and whether it would be able to LISTEN at the same time to several clients or it's only for a PTP link. It seems like I could listen to 5 pipes at the same time? Do I need to set up same channel and pipe# on both ends?Any clarification on these would be really appreciatedThanks guys!
The distance would be in the range of 100-300 meters (~yards), in open space, or option 2, 30m in a house.
Can I still use LoRa as a normal device "interconnection" system so all the devices talk to a central point
I would again recommend you experiment .................
Which LoRa modules should I get (Im in Spain, in case the bands matter)