So quick breakdown of the project is I want to control the following with a 0-5V input signal to the Arduino:
- 3x servo motors
- 2x 12VDC fans
- 2x or 3x thermoelectric coolers
After doing some research, it sounds like an Arduino Uno would be the best route, with POTENTIALLY one motor shield.
Now motor shields appear to have the option to control two fans and two servos simultaneously. I need three servos, but two of them operate in reverse of one another (i.e. they both go between 0 and 90 degrees, with one at 0 and other at 90, or one at 15 and the other at 75, both at 45, etc etc). I would think I could use a Y splitter and reverse the polarity on each so they would operate on one output of the shield, meaning I could control all three servos from two outputs. Does that make sense, or are these just the crazy ramblings of a mechanical engineer?
Now if the above DOES work, then I still have 2-3 TECs to figure out how to control. Does getting one motor shield AND an additional add on make sense for all this, or is there some more efficient way of doing everything here?