I was a newbie not too long ago and found myself wanting to build a hot tub monitor. I was wondering if you got started on your project and wanted to collaborate and share? I would like feedback on my Arduino hot tub monitor.
The project is posted here: http://openspamonitor.blogspot.com/
I started very slow, getting one sensor to work, adding an Ethernet shield, finding reliable code examples and adding and testing other sensors. It has been a great process, and I have learned so much. I had no prior experience with electronics and programming. Thats why I am sharing my design, as others have done, in hopes the people like you can learn from it and improve it. I would like to build a community like the open energy monitor, and I hope that you have time to participate in this project. It is not all that complex, but I am prototyping an RF version now and designing a PCB for the project.
Please get in touch with me and let me know what you think. I am interested in how your build is going, if you would like to share.