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Make your UPS smarter with ESP8266 and PCF8591

The UPS did not shut down the computer in the event of a power outage. This hack makes the UPS smarter, I made this circuit with ESP8266

I have a well-functioning UPS with a faulty network interface, I use it for the iobroker server. The problem was that it did not shut down the PC in the event of a prolonged power outage. To smarter the UPS, I made the following circuit using ESP8266 and PCF8591 and built it into the UPS.”

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