Using Node Red to monitor a radio site

[dynamicdave]

If you have WiFi access at the Repeater Site, then that task should be fairly easy.
I have built a number of remote sensing units, using ESP32-S2-Mini devices (flashed with Micro-Python), that report some of the conditions you mentioned to a remote MQTT broker and then onto Node-RED.

Here's a link to a tutorial I posted a year ago.

Single Sensor Node (ESP32-S2-Mini or RPi Pico-W)

The project is based on an ESP32-S2-Mini and can be deployed to sense temperature, humidity and air pressure in any geographical location. All it needs is access to a WiFi Access Point and a (local or remote) MQTT broker. Today I've been converting the Micro-Python script I wrote for the ESP32-S2-Mini to work on a RPi Pico-W. One of my friends wanted to try it out but only had a Pico-W. I've called it 'Single Sensor Node' as it sits in my greenhouse and reports Temp/Humidity/Pressure and the …

Please note:
I've recently designed a simple Reporter Node that reports T/H/P, Light Level and Vin and Vreg.
I'll write a tutorial when I have some spare time.

Here's a photo of my digital board (using an ESP32-C3-Super-Mini) that supports 2 by 8-bit ports, BH1750 (light sensor) and BME280 (T/H/P sensor).

I have found the IN219 (with I2C interface) is a great chip to sense and report current load.

Note: This particular device is intended for currents up to 3.2A max and Bus Voltage of 26V max.