1. N

    Basic/stupid questions on simple wire antennas

    Hello, folks. I just joined! This is a cross-post from my Reddit post (). I am working on a design using LoRa for communication, but I have no real RF knowledge or expertise. So, I have a few questions that I hope you all can help me answer. 1. The device will use LoRa operating at 915 MHz. I...
  2. MrNams

    Can we make onboard antenna external?

    Hello, Sorry 1) if this is wrong place 2) Dumb question. I am working on smart irrigation project, I have Arduino connected with 4 sensors and 1 actuator, Arduino collect data and send to ESP32 using Reyax RYLR896 Lora Module connected to it. I keep all PCBs in one waterproof box, but this...
  3. Answerzzz

    Ultra low power transmitting for short distance

    Hi, I am using a small battery to power both a sensor and a transceiver to send a signal for ~500 meters. I am looking for the lowest power-consuming method. I don't really care about how low my transfer rate. 1 sample per 1 is good enough For my sensor, I was thinking of using a Thermistor...
  4. onurdnz95

    LoRa communication with arduino

    I want to set up a communication system with lora module using arduino. The lora module is said to have a high range (<15km), but when I go about 50-100 meters away, my connection drops. Also, when I integrate a sensor into this system, I can't get an output from my sensor. When I try the same...
  5. S

    How do multiple wireless devices avoid communication collision

    I try learning through youtube and other resources for example WiFi works on 2.4Ghz actually there are other 8 bands too (some other frequencies next/before 2.4Ghz) so different devices use those different bands/frequencies to communicate at same time, for sure on receiving end we have 8...
  6. S

    Confusing LoRa RFM96 module

    I bought these modules from Aliexpress, as we know sometime they are not what we expect. Its RFM96 (or may be RF96 if actually that is different) when i was going through datasheet at end of the datasheet it was clearly said that RF95 family supports 868Mhz & 915Mhz but RF96 supports 433Mhz I...
  7. zazas321

    How does LoRa work in ESP32

    Hey. I want to try to make low power device based on ESP32 to send readings to the server. I have come across this tutorial that describes how to get lora working on ESP32: https://randomnerdtutorials.com/esp32-lora-sensor-web-server/ Lora reicever function: void getLoRaData() {...
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