PeaPod Subsystem Design: Thermoregulation

Closes #45

Resources:

"To find the average heat loss per unit area, simply divide the temperature difference by the R-value for the layer." https://en.wikipedia.org/wiki/R-value_(insulation)#Calculating_heat_loss
Peltier driver resource: https://www.ti.com/lit/an/slua979a/slua979a.pdf "It is more accurate to use constant current [to drive a Peltier tile] than voltage drive as its impedance varies with temperature"
Peltier tile intro and selection: https://www.cuidevices.com/blog/how-to-select-a-peltier-module
Peltier systems design: https://www.cuidevices.com/blog/how-to-design-a-peltier-module-system

Module:

[x] Selected housing passive thermoregulation (aka insulation) from frame thickness, maximizing R-value (running cost of energy inefficiency) vs initial cost
[x] Calculated power requirement: housing heat loss from panel area, panel thickness, and R-value
[x] Calculated power requirement: initial to target minima/maxima in 60s from volume, molar mass, specific heat capacity
[x] Selected Peltier tiles (model and quantity) from heat loss requirement of 4 PeaPods
[ ] Selected heat sinks from Peltier dimensions, power dissipation (?) requirement
[ ] Selected fans from power dissipation (?) requirement
[ ] CAD everything

Driver:

[ ] Selected N- and P-channel MOSFETs from current requirement, gate voltage threshold w/ microcontroller
[ ] Selected power, control connectors (standard)
[ ] ~~Selected dimmable buck-boost constant current driver from input voltage, output current range~~
[ ] Designed schematic with H-bridge and dimming, generated PCB w/ mounting holes
[ ] Wrote control code for driver circuit

PID Control:

PeaPodTechnologies / PeaPod