View this project on CADLAB.io.
Twilight with attiny85, Interrupted and Tiny Safe Boot.
The layout in version #1 is broken, there's a short in the power circuit. (Never ignore ERC warnings!)
Version #2 has been built and tested. Depending on the PIR sensor used, the 22k resistor is optional. If present, it drags down the output of Mini-PIRs too much.
Version #3 improves the layout some more but is (so far) untested.
