DIY

2823 readers

5 users here now

Share your self-made stuff and half-baked projects here.

Also check out !diy@beehaw.org

There is also a related XMPP chat.

founded 2 years ago

MODERATORS

poVoq

Year-round Solar Water Temperature Sensor (imgur.com)

submitted 1 year ago by kaedon to c/diy

8 comments fedilink hide all child comments

A small solar power system to run a LoRa water temperature sensor year round. Here's some pretty graphs of the data:

https://www.kaedon.net/mitigomish/watertemp

This is a project that's been running for almost 2 years now. Everything is still working with very little down time! The solar power system is way overpowered for what it's doing, but I wanted to make sure it works through the dark winters.

The temperature sensor is at the bottom of a bucket in the ground, because the water level gets pretty low in the winter and I didn't want the ice to destroy the temperature sensor when it drifts.

Any thoughts or suggestions for improvements are welcome!

you are viewing a single comment's thread
view the rest of the comments

[–] cybermatrix 1 points 1 year ago

Nicely made! You have a small lithium or lead battery in there? Also can you read the voltage of the battery the whole year? I am interested in the survivability on the winterdays. I am living in Lithuania where the winter sun hours are very short and sometimes with days of overcast. But i would like to build solar powered tech that can survive in winter. Also interested in using capacitors instead of chemistrial (if thats a word) batteries.