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    What is the best LoRa module to use for long distance network?

    ESP32
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    • PumpedMedusa
      PumpedMedusa last edited by

      I'm trying to create an IoT network based on LoRa Wan and ESP32. I have tried using an RA02 module to for transmission of data but the range I'm getting is around 250m. The required range for my project is around 5KM with no line of sight. What is the best way to go about it? Which will be the best LoRa module that I use for this project?

      salmanfaris 1 Reply Last reply Reply Quote 0
      • salmanfaris
        salmanfaris @PumpedMedusa last edited by

        Hi @PumpedMedusa, The rage is depends on the Antenna and how much TX power you have.

        To choose antenna, first you need figure out - where your nodes will be, take a look at the below image. The antenna act like a "torch" if you have more dbi that mean it's focus will be increase and it can reach more distance but the angle it have it less, like a laser.

        458a3da2-175a-4968-917c-56c5a1b763f8-image.png

        also, obstacle such as buildings, tress and mountains will affect the signal and deplete it.

        afe5eba4-b192-4263-8596-80c912fc1f23-image.png

        So, answer for you question - What is the best LoRa module to use for long distance network? - It's really depends on where you planning to put the nodes and how high you putting the gateway. Let me know know your thoughts.

        1 Reply Last reply Reply Quote 0
        • First post
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        Recent Posts

        • @mahesh02 From the current Arduino ESP32 board files, we don't need to install the ESP-NN separately.

          But try to choose the esp32 board version 3.1.3 and check, as I also faced issues with the latest esp32 board file.

          • read more
        • M

          Im having the same error as below, it will be really awesome if you can help me.

          In file included from C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/classifier/ei_classifier_types.h:40,
          from C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/classifier/ei_model_types.h:40,
          from C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/classifier/ei_run_classifier.h:38,
          from C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/mahesh02-project-1_inferencing.h:49,
          from C:\Users\Mahesh\AppData\Local\Temp\arduino_modified_sketch_680639\esp32_camera.ino:27:
          C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/model-parameters/model_metadata.h:108:2: warning: #warning 'EI_CLASSFIER_OBJECT_DETECTION_COUNT' is used for the guaranteed minimum number of objects detected. To get all objects during inference use 'bounding_boxes_count' from the 'ei_impulse_result_t' struct instead. [-Wcpp]
          #warning 'EI_CLASSFIER_OBJECT_DETECTION_COUNT' is used for the guaranteed minimum number of objects detected. To get all objects during inference use 'bounding_boxes_count' from the 'ei_impulse_result_t' struct instead.
          ^~~~~~~
          In file included from C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/dsp/memory.hpp:38,
          from C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/dsp/ei_alloc.h:34,
          from C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/dsp/ei_vector.h:34,
          from C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/dsp/numpy_types.h:40,
          from C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/dsp/ei_dsp_handle.h:35,
          from C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/classifier/ei_model_types.h:41,
          from C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/classifier/ei_run_classifier.h:38,
          from C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/mahesh02-project-1_inferencing.h:49,
          from C:\Users\Mahesh\AppData\Local\Temp\arduino_modified_sketch_680639\esp32_camera.ino:27:
          c:\users\mahesh\onedrive\documents\arduino\libraries\mahesh02-project-1_inferencing\src\edge-impulse-sdk\porting\ei_classifier_porting.h:310: warning: "EI_PORTING_ARDUINO" redefined
          #define EI_PORTING_ARDUINO 0

          c:\users\mahesh\onedrive\documents\arduino\libraries\mahesh02-project-1_inferencing\src\edge-impulse-sdk\porting\ei_classifier_porting.h:279: note: this is the location of the previous definition
          #define EI_PORTING_ARDUINO 1

          In file included from C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/dsp/speechpy/speechpy.hpp:35,
          from C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/classifier/ei_run_dsp.h:40,
          from C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/classifier/ei_run_classifier.h:41,
          from C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/mahesh02-project-1_inferencing.h:49,
          from C:\Users\Mahesh\AppData\Local\Temp\arduino_modified_sketch_680639\esp32_camera.ino:27:
          C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/dsp/speechpy/feature.hpp: In static member function 'static int ei::speechpy::feature::mfe(ei::matrix_t*, ei::matrix_t*, ei::signal_t*, uint32_t, float, float, uint16_t, uint16_t, uint32_t, uint32_t, uint16_t)':
          C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/dsp/speechpy/feature.hpp:236:52: warning: missing initializer for member 'ei::speechpy::ei_stack_frames_info::frame_ixs' [-Wmissing-field-initializers]
          stack_frames_info_t stack_frame_info = { 0 };
          ^
          C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/dsp/speechpy/feature.hpp:236:52: warning: missing initializer for member 'ei::speechpy::ei_stack_frames_info::frame_length' [-Wmissing-field-initializers]
          In file included from C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/dsp/speechpy/speechpy.hpp:35,
          from C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/classifier/ei_run_dsp.h:40,
          from C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/classifier/ei_run_classifier.h:41,
          from C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/mahesh02-project-1_inferencing.h:49,
          from C:\Users\Mahesh\AppData\Local\Temp\arduino_modified_sketch_680639\esp32_camera.ino:27:
          C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/dsp/speechpy/feature.hpp: In static member function 'static int ei::speechpy::feature::mfe_v3(ei::matrix_t*, ei::matrix_t*, ei::signal_t*, uint32_t, float, float, uint16_t, uint16_t, uint32_t, uint32_t, uint16_t)':
          C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/dsp/speechpy/feature.hpp:436:52: warning: missing initializer for member 'ei::speechpy::ei_stack_frames_info::frame_ixs' [-Wmissing-field-initializers]
          stack_frames_info_t stack_frame_info = { 0 };
          ^
          C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/dsp/speechpy/feature.hpp:436:52: warning: missing initializer for member 'ei::speechpy::ei_stack_frames_info::frame_length' [-Wmissing-field-initializers]
          C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/dsp/speechpy/feature.hpp: In static member function 'static int ei::speechpy::feature::spectrogram(ei::matrix_t*, ei::signal_t*, float, float, float, uint16_t, uint16_t)':
          C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/dsp/speechpy/feature.hpp:576:52: warning: missing initializer for member 'ei::speechpy::ei_stack_frames_info::frame_ixs' [-Wmissing-field-initializers]
          stack_frames_info_t stack_frame_info = { 0 };
          ^
          C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/dsp/speechpy/feature.hpp:576:52: warning: missing initializer for member 'ei::speechpy::ei_stack_frames_info::frame_length' [-Wmissing-field-initializers]
          In file included from C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/mahesh02-project-1_inferencing.h:49,
          from C:\Users\Mahesh\AppData\Local\Temp\arduino_modified_sketch_680639\esp32_camera.ino:27:
          C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/classifier/ei_run_classifier.h: In function 'EI_IMPULSE_ERROR {anonymous}::process_impulse(ei_impulse_handle_t*, ei::signal_t*, ei_impulse_result_t*, bool)':
          C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/classifier/ei_run_classifier.h:307:23: error: format '%lu' expects argument of type 'long unsigned int', but argument 2 has type 'size_t' {aka 'unsigned int'} [-Werror=format=]
          ei_printf("ERR: Out of memory, can't allocate matrix_ptrs[%lu]\n", ix);
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~
          C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/classifier/ei_run_classifier.h:312:23: error: format '%lu' expects argument of type 'long unsigned int', but argument 2 has type 'size_t' {aka 'unsigned int'} [-Werror=format=]
          ei_printf("ERR: Out of memory, can't allocate matrix_ptrs[%lu]\n", ix);
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~
          C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/classifier/ei_run_classifier.h: In function 'EI_IMPULSE_ERROR {anonymous}::process_impulse_continuous(ei_impulse_handle_t*, ei::signal_t*, ei_impulse_result_t*, bool)':
          C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/classifier/ei_run_classifier.h:558:27: error: format '%lu' expects argument of type 'long unsigned int', but argument 2 has type 'size_t' {aka 'unsigned int'} [-Werror=format=]
          ei_printf("ERR: Out of memory, can't allocate matrix_ptrs[%lu]\n", ix);
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~
          C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing\src/edge-impulse-sdk/classifier/ei_run_classifier.h:563:27: error: format '%lu' expects argument of type 'long unsigned int', but argument 2 has type 'size_t' {aka 'unsigned int'} [-Werror=format=]
          ei_printf("ERR: Out of memory, can't allocate matrix_ptrs[%lu]\n", ix);
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~
          C:\Users\Mahesh\AppData\Local\Temp\arduino_modified_sketch_680639\esp32_camera.ino: In function 'void loop()':
          C:\Users\Mahesh\AppData\Local\Temp\arduino_modified_sketch_680639\esp32_camera.ino:181:38: warning: missing initializer for member 'ei_impulse_result_t::bounding_boxes_count' [-Wmissing-field-initializers]
          ei_impulse_result_t result = { 0 };
          ^
          C:\Users\Mahesh\AppData\Local\Temp\arduino_modified_sketch_680639\esp32_camera.ino:181:38: warning: missing initializer for member 'ei_impulse_result_t::classification' [-Wmissing-field-initializers]
          C:\Users\Mahesh\AppData\Local\Temp\arduino_modified_sketch_680639\esp32_camera.ino:181:38: warning: missing initializer for member 'ei_impulse_result_t::anomaly' [-Wmissing-field-initializers]
          C:\Users\Mahesh\AppData\Local\Temp\arduino_modified_sketch_680639\esp32_camera.ino:181:38: warning: missing initializer for member 'ei_impulse_result_t::timing' [-Wmissing-field-initializers]
          C:\Users\Mahesh\AppData\Local\Temp\arduino_modified_sketch_680639\esp32_camera.ino:181:38: warning: missing initializer for member 'ei_impulse_result_t::copy_output' [-Wmissing-field-initializers]
          C:\Users\Mahesh\AppData\Local\Temp\arduino_modified_sketch_680639\esp32_camera.ino:181:38: warning: missing initializer for member 'ei_impulse_result_t::postprocessed_output' [-Wmissing-field-initializers]
          cc1plus.exe: some warnings being treated as errors
          Using library mahesh02-project-1_inferencing at version 1.0.1 in folder: C:\Users\Mahesh\OneDrive\Documents\Arduino\libraries\mahesh02-project-1_inferencing
          exit status 1
          Error compiling for board AI Thinker ESP32-CAM.

          • read more

        • This also happened to me when I was given a task from my company, So what I can recommend is:
          Ensure that the correct board, "AI Thinker ESP32-CAM," is selected in the Tools menu of your Arduino IDE.
          If the board is not listed, you may need to install it through the Board Manager. Search for "ESP32" and install the latest version.
          Ensure that necessary libraries like ESP32-CAM, WiFi, and HTTPClient are installed. You can install them through the Library Manager.

          Carefully check your code for typos, missing semicolons, or incorrect syntax.
          Verify that you're using the correct function names and parameters.

          • read more

        • Hi @PumpedMedusa, The rage is depends on the Antenna and how much TX power you have.

          To choose antenna, first you need figure out - where your nodes will be, take a look at the below image. The antenna act like a "torch" if you have more dbi that mean it's focus will be increase and it can reach more distance but the angle it have it less, like a laser.

          458a3da2-175a-4968-917c-56c5a1b763f8-image.png

          also, obstacle such as buildings, tress and mountains will affect the signal and deplete it.

          afe5eba4-b192-4263-8596-80c912fc1f23-image.png

          So, answer for you question - What is the best LoRa module to use for long distance network? - It's really depends on where you planning to put the nodes and how high you putting the gateway. Let me know know your thoughts.

          • read more

        • @Parves-DOMINO Did you able to solve the issue?

          • read more
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