ESPHome-ESP8266-PCF8583-counter

Battery impulse counter based on ESPHome with ESP8266 and PCF8583 acting as hardware counter

Components:

• ESP8266 Module (for example NodeMCU)
• Photoresistor Module
• PCF8583 Real Time Clock
• 1KΩ Resistor
• 100nF Capacitor
• 3.3V LiFePO4 battery
• Prototype board and some wires

Example configuration for energy meter with 6400 impulses per kWh. You can change that in yaml:

                return (1000.0 * (delta_count / 6400.0) * (3600.0 / 60.0));

              state: !lambda return (x / 6400.0);