yeah, i remember that thread from a few weeks ago... i just forgot to watch it and didn't see that someone figured out the issue. however, i've already completed 2/3 of the work with designing my own apparatus, and i think it's much cooler to make the thing from the ground up.

today was pretty slow at the office, so i worked a little bit more on it. i have the voltage comparator working like it should, although soldering to it was definately a PITA! the whole chip is smaller than my pinky fingernail. (oh yeah, i'm an imagestation n00b. sorry about the broken links above, i think i have it figured out by now)


yeah, it's pretty ghetto and thrown together, but i proved to myself that it works.


and here's the schematic so far:


i still need to design some type of amplifier circut to take the final output voltage (it's either 0 or 1.6ish volts depending on what the pressure sensor is doing) and convert it into useful power to drive the relay. after that, i just need to solder everything together for real and put it in a box.

anyways, just thought i'd update things.