This project allows you to control and monitor Pylontech US2000B batteries via console port over WiFi. It it's a great starting point to integrate battery with your home automation.

Features:

Low cost (around 20$ in total).
Adds WiFi capability to your Pylontech US2000B battery.
Device exposes web interface that allows to:
- send console commands and read response over WiFi (no PC needed)
- battery information can be retrevied also in JSON format for easy parsing
Easy to modify code using Arduino IDE and flash new firmware over WiFi (no need to disconnect from the battery).

Parts needed:

Wemos D1 mini microcontroller.
SparkFun MAX3232 Transceiver.
Cable with RJ10 connector (some RJ10 cables have only two wires, make sure to buy one that has all four wires present).
Capacitors C1: 10uF, C2: 0.1uF (this is not strictly required, but recommended as Wemos D1 can have large current spikes).

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