Hey guys, it's me! I've sort of moved the conversation to www.yieldbuddy.com and plan on working on this project again pretty quick. It's been a busy 8 months!
Right now it's made to update the database in separate tables; 'yieldbuddy-0' 'yieldbuddy-1' 'yieldbuddy-2' etc... (ie. for three yieldbuddy's) Nothing has been made to monitor all 'three' on one page, but you could generate graphs from the database comparing values from all 'three'...
He shouldn't be doing it like this... lol
Really, it should be like so:
This way, you could pass x and y directly to any myGLCD sub-function without having to convert the values each time within the function call itself.
The Raspberry Pi only controls the web interface, the Arduino is what the sensors connect to. I use a DHT11 and a LM35 along with a simple LDR <--- all three under $3
lol... It might seem that way, but I'm just hoping you find a bucket full of Raspberries! Now that it's all split up it might be considered 'art', but before? Maybe a Picasso?
Nice scaling formulas. I was doing something similar, but that looks like it'd be more exact. If you were experimenting with the old envirocontrol on your Pi your SD card is probably dead! lol. Good thing they're like $2/GB now. And yeaaaas, I hope you enjoy the new easier to understand...
Reference? I'm only using the information found on the UTFT library site at: http://www.henningkarlsen.com/electronics/library.php?id=51
Oh and I posted yieldbuddy v1.16 yesterday.