Shannon, Thanks for your reply.
I am interested in measuring pH, Temp., DO, and Conductivity. What do you recommend?
Also, I just noticed on your blog that the latest version of Mayfly accepts 12 V power.
This is perfect since a lot of medium/higher grade sensor sondes work off of 12 V. The question
I have is whether Mayfly will enable sleep mode to save battery like it did with 6 V max input?
In other words, can I power the board with 12 V solar panel and regulate the battery as before?
Also, should the 12 V input be from a LiPo Battery? I hope my questions make sense.