Progress from my last post:
- Abandoned “Arduino Shield” form factor because it was too small for 4 relays and had too much baggage, ie. unneeded electronics and connections.
- Redesigned circuit and PCB into an “Arduino clone” with isolated logic and power sections for safety purposes.
Still to do:
- Write Arduino firmware to handle programming the number of boxes and on/off temperature values.
- May consider two separate PCBs for logic and power for safety and form factor reasons.
- Fabricate PCBs, solder on components and test.
High level connections view:
Form factor view:
