I’m building a mini-fridge fermentation temperature controller with my Photon, and I want to ensure I get alerted in case of a power failure.
I’m a SW guy, so the HW side is not my forte! Here’s my first shot at building a circuit to do this - the Photon would interrupt on D7 going low to trigger the power loss alert and do whatever graceful shutdown is needed. Feedback please?
Edit to add: I’m not worried aabout using Vbat to keep the RTC/SRAM alive - clock sync etc would be taken care of on startup regardless.