How to make a cellular-connected garden monitor

Check out this project I made to monitor the soil moisture level of my remote garden plot. Since the garden has no power or internet available, it uses a cellular data connection to send info back to a cloud service, and then that data gets passed to another cloud service for plotting. A great learning experience!

I posted all the details on Hackster.io, a community for hardware makers with lots of interesting projects:

Some additional pictures:

Rather than an Arduino, I used the Hologram Dash for this project. Check out all the details on Hackster! Have you made anything similar? How would you improve it?

Enjoy!

Mike