So, thanks for all the tutorials! I already know C fairly well, so if I can muddle through the electronics, I can actually create things.
Speaking of that, I'd kind of like my next "robot" to be a hydroponics set-up. As such, I'll be needing to measure P.H.... would someone be so kind as to give me a hint? All of of the solutions that are designed to be interfaced with micro-controllers are horribly pricey (even though hand-held solutions are cheap) and converting a hand-held might be a very difficult feat for someone who doesn’t own surface-mount equipment....
Thanks!