Remote water depth and temp sensor not line of sight

Projects General Guidance
1

Hi All,

I operate a fish farm in a remote area. No cellular connection. I have an intake pipe in our lake about 800m away from the hatchery. The hatchery and lake are not line of sight, the lake is about 100m higher elevation. I would like to add a depth sensor and temp sensor to the pipeline to monitor the depth and temp from the hatchery. I have the sensors I want to use picked out, but don't know the best method to transmit the data to an oled at the hatchery.

Suggestions?

For the temp sensor I plan to use a DS18B20
and for the depth sensor I am planning on the DFRobot Gravity Liquid level transmitter
I have 12v dc (solar) available at the intake

2

https://en.wikipedia.org/wiki/LoRa

3

You might consider a pair of RFM69HW-915 radio's. I had a short foray into "mysensors.org" and tested a pair of radios that easily went a couple of 100 meters with objects in the path. (houses, concrete wall etc)

There was some discussion of a longer range radio which I don't recall.

4

Also you might consider this setup.

https://www.instructables.com/Simple-Arduino-Wireless-Mesh/

5

How much terrain blocks line of sight?
Flag pole with antenna at each end?

There are YouTube videos greater distance with line of sight.
[Edit : for almost every type transmitter]

LoRa does have a mesh network tutorial. So you have options.

Flagpole at each end.
One somewhere between that both see.

I think if you did put up an antenna then it would be very smart to make sure it was not a lightning rod

6

Hello,
take two HC-12 transceivers and Arduinos including a simple ping-pong sketch and test the propagation conditions. Take care about the line of sight for the arials.
Good luck.

7

Make sure you try this in bad weather conditions too, before you convince yourself it's working.

8

my grandfather used to say:
"Probieren geht über studieren" :sweat_smile: :rofl: :joy:

1 Like
9

Thank you all for your responses! I was considering a LoRa setup, your responses confirm this is probably my best method. I had not considered using a mesh network to achieve my distance goal if needed. I think I have my hardware sorted out now! Thank you all!!!

10

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