Polycab Solar Inverter to MQTT

This script runs as a service on my raspberry pi zero 2 w and communicates with the Polycab PSIS-3K-SM1 inverter over Bluetooth. It feeds the key inverter data like solar generation, to the mosquitto MQTT broker on my Home assistant. The values were reverse-engineered from the Android app used for local monitoring.

Inverter Model:

PSIS-3K-SM1

Key Features:

• Auto Sleep: Automatically enters sleep mode after sunset and wakes up at sunrise
• Error Handling: Automatically retries the connection if an error occurs

Mapped Variables:

• Solar Input: Power coming from solar panels
• Inverter Power: The power going to the grid from the inverter
• Peak Power: Maximum power achieved during the day
• Active Power: Not exactly sure what this is (lmk if you know)
• L1 Voltage: Voltage on Line 1
• L1 Current: Current on Line 1
• Temperature: Inverter temperature
• E Today: Total energy generated today (which was imp for me)
• E Total: Lifetime energy generation (also imp for me)