40 lines
2.2 KiB
Markdown
40 lines
2.2 KiB
Markdown
# Pylontech Battery Monitoring via WiFi
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This project allows you to control and monitor Pylontech US2000B batteries via console port over WiFi.
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It it's a great starting point to integrate battery with your home automation.
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** I ACCEPT NO RESPONSIBILTY FOR ANY DAMAGE CAUSED, PROCEED AT YOUR OWN RISK **
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Features:
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- Low cost (around 20$ in total).
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- Adds WiFi capability to your Pylontech US2000B battery.
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- Device exposes web interface that allows to:
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* send console commands and read response over WiFi (no PC needed)
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* battery information can be retrevied also in JSON format for easy parsing
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- Easy to modify code using Arduino IDE and flash new firmware over WiFi (no need to disconnect from the battery).
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Parts needed:
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- [Wemos D1 mini microcontroller](https://www.amazon.co.uk/Makerfire-NodeMcu-Development-ESP8266-Compatible/dp/B071S8MWTY/).
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- [SparkFun MAX3232 Transceiver](https://www.sparkfun.com/products/11189).
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- Cable with RJ10 connector (some RJ10 cables have only two wires, make sure to buy one that has all four wires present).
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- 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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How to get going:
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- Get Wemos D1 mini
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- Install arduino IDE and ESP8266 libraries as [described here](https://averagemaker.com/2018/03/wemos-d1-mini-setup.html)
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- Open [PylontechMonitoring.ino](PylontechMonitoring.ino) in arduino IDE
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- Specify your WiFi login and password at the top of the file (line 13-14)
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- Upload project to your device
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- Connect Wemos D1 mini to the MAX3232 transreceiver
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- Connect transreceiver to RJ10 as descibed in the schematics (all three lines need to be connected)
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- Connect RJ10 to the serial port of the Pylontech US2000 battery. If you have multiple batteries - connect to the master one.
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- Connect Wemos D1 to the power via USB
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- Find what IP address was assigned to your Wemos by your router and open it in the web-browser
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- You should be able now to connunicate with the battery via WiFi
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See the project in action on [Youtube](https://youtu.be/7VyQjKU3MsU)
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<iframe width="560" height="315" src="https://www.youtube.com/embed/7VyQjKU3MsU" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>
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