The goal is to control a single or set of peltier modules with an arduino WITHOUT using direct pwm switching, as this stresses the hell out of peltiers and seems to hurt their efficiency. The mosfets at the top will be replaced with logic levels and will act solely as switches. The transistors on the low side will ultimately control the amperage through the peltier. The signal for these is the smoothed pwm signal of the arduino as represented by the digital signal located bottom right. The manual two pole switches that reverse polarity will obviously be handled by simply dedicating two arduino pins to the digital signal for the fets and two for the simulated analog. To adjust polarity flip both switches.
To adjust current, scroll the pulse width.
The adjustment rate is very slow because were viewing at the common arduino pwm frequency. to allieviate this so you can more readily observe the ranges just drop the capacitor by a few tens of micros, or just slap a dc voltage source at the bottom of the right switch and scroll between 0-5v.
If anyone sees something that won't work or needs assessed I implore you correct me. I have a decent amout of experience with component level engineering but I have my foot in the door of so many other fields that I've never had the chance to truly delve into the finer nuances.
