20190611_173238
The disconnector and autorestart perf board.
My Raspberry Pi computers have an ESP8266-based UPS that can restart and power-off the RPi. This board disconnects the wall power UPS input so that the UPS and RPi are completely isolated from external power. A lightning detection system supplies "Strike Probabilty" data via a TCP socket so that the RPi can tell the UPS to shutdown everything.
There is an ATTiny45 on this board that is powered up when the main relay is de-energized via a n.c. contact and runs from 2xAA batteries in micropower mode. After an hour, the Tiny turns on the UPS which powers up the client RPi and turns off the Tiny.
20190611_173238
The disconnector and autorestart perf board.
My Raspberry Pi computers have an ESP8266-based UPS that can restart and power-off the RPi. This board disconnects the wall power UPS input so that the UPS and RPi are completely isolated from external power. A lightning detection system supplies "Strike Probabilty" data via a TCP socket so that the RPi can tell the UPS to shutdown everything.
There is an ATTiny45 on this board that is powered up when the main relay is de-energized via a n.c. contact and runs from 2xAA batteries in micropower mode. After an hour, the Tiny turns on the UPS which powers up the client RPi and turns off the Tiny.