Hi All, I need some help in identifying the best technology to create a remote mimic panel for the 16 alarm outputs from my Network Video Recorder (NVR). I have no way of monitoring alarm signals from the NVR except by running a cable, in this case 16 cables. I need some help to identify which technology would be best to transmit status (On or Off) to a LED panel. Distance is close (+/-20 meters) but running a cable is impossible. I am not sure if an ESP Wifi (Wroom) or a ESP32 LoRa type board would be best? Can anybody give some input please?
I would go for WiFi, maybe even Bluetooth for such short distances. Do you have power on both ends of the connection?
Another vote for WiFi, as long as you take some WiFi enabled device to your two locations and verify that there is signal there.
Power is no problem. Im going to experiment with 2 x ESP's and see if I can get them communicating in Client/Server mode.
Thank you, I will try that.
Are these momentary, or are they once on you manually need to reset?
Why use WiFi though ?
The ESP32 is capable of direct node to node packet transmit and receive, in a similar way to LoRa modules, but without the long range of course.
They are configurable to length of time they stay closed from the N/O position. No reset needed.
Thank you. I will watch the video to educate myself about the various transmission methods of which there seem to be a few. WiFi is the most attractive as I can link to a mobile phone later as I learn more about the software etc.
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