TT047 Aziz Quad Temperature Controller

4-channel temperature controller for Aziz batteries.  Inputs are thermocouples.  Outputs are 2A solid-state relays.  On-times are staggered to help manage the AC load.

Base is a standard TipTop1590BB.  4-channel TTSSR4 board is inside, and thermocouple toppers are on top.  Supply is +12V.  On-board Vregs aren't installed.  Top view:

Inside, with the SSR board installed:

and with the SSR board removed:

Arduino code:

Schematics are unmodified.  You can find them in the boards folder.