Garagem Open/Close x LoRA X distance 2km x OpenMQTTGateway

[lscosta90br]

HI, I am designing an IoT project to automate my need to open and close an electronic gate that is 2km away. Here are some suggestions that I can use in the project:

• On the motherboard of the garage door, I can use push button activation.
• I have 2 lora esp32 equipment with the following specification: 868 mhz / 915 mhz lora esp32 oled wifi sx1276 iot module & antenna-
• The gate is activated via 433mhz

How can I employ OpenMQTTGateway in this project?

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[1technophile]

Hi, You could use it like that

Controller ->OMG on ESP32 LORA ->Custom firmware on ESP32 LORA -> Push button ....................Wifi..........................................LORA..............................................................Wire

The custom firmware consist on a program based on modified version of LoraReceiver.ino which trigger a relay or equivalent to simulate the push button of your door.

Added to that I would add a sensor to know the door state: Controller <-OMG on ESP32 LORA <-Custom firmware on ESP32 LORA <- Sensor ....................Wifi..........................................LORA..............................................................Wire

[lscosta90br]

Hi,

There is no ready firmware like the tasmota or esp-home project for Lora, with a web interface just to configure the button and the sensor!

[spattinson]

Can you see if you can build omg and run it as i am getting panic reboot on my ttgo tbeam? My ticket: https://github.com/1technophile/OpenMQTTGateway/issues/564#issue-574317976 You should be able to work over that distance no problem. Range is affected by the lora parameters you use, bandwidth, spreading factor, tx power, coding rate. You should need no special antenna at that range, i tested up to a mile in an urban environment as that range suits my project. Omg should be fine to act as mqtt lora bridge, the other end you need custom firmware which you should find something to base it off on github.you might as well stick to mqtt style messages, just keep them as short as possible to reduce latency and be a good neighbor.

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