How do I use the sensor module with an HC-SR04 sensor to measure cistern level?

Development
7

Quick update for anyone else searching the forum: silly little things I learned

I used an arduino nano serial output to pin 46 & 45 on the Heltec V3 at a baud rate of 38400.

meshtastic --set serial.rxd 45
meshtastic --set serial.txd 46
meshtastic --set serial.mode SIMPLE

this sends text to the primary channel on the mesh with the result of the arduino’s action.

at 165m away I can read the cistern level on my laptop via the G1 meshLAN or on my phone with another Heltec device.

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