42 lines
2.5 KiB
Markdown
42 lines
2.5 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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See the project in action on [Youtube](https://youtu.be/7VyQjKU3MsU):</br>
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<a href="http://www.youtube.com/watch?feature=player_embedded&v=7VyQjKU3MsU" target="_blank"><img src="http://img.youtube.com/vi/7VyQjKU3MsU/0.jpg" alt="See the project in action on YouTube" width="240" height="180" border="10" /></a>
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# Parts needed and schematics:
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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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* Make sure to copy content of [libraries subdirectory](libraries) to [libraries of your Arduino IDE](https://forum.arduino.cc/index.php?topic=88380.0).
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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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