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https://github.com/mariolukas/bluetti_esp32_bridge

Bluetti Power Station ESP32 Bluetooth to MQTT Bridge
https://github.com/mariolukas/bluetti_esp32_bridge

ac200 ac300 arduino bluetooth bluetti eb3a ep500p esp32 iobroker mqtt openhab powerstation wifi

Last synced: 9 days ago
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Bluetti Power Station ESP32 Bluetooth to MQTT Bridge

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README 

        
## About

This is an ESP32 based Bluetooth to MQTT Bride for BLUETTI power stations. The project is based on https://github.com/warhammerkid/bluetti_mqtt

The code is tested on a AC300. Other Powerstations should also work but are untested yet. The discussion on https://diysolarforum.com/threads/monitoring-bluetti-systems.37870/ was a great help for understanding the protocol. 



## Community

Join the Discord Server https://discord.gg/fWDSBTCVmB



## Features



* easy configuration with WiFi manager

* display support OLED 128x64 

  * tested ESP32 WROOM with display: https://github.com/LilyGO/TTGO-T2-ESP32

* mqtt support

* support for BLUETTI power stations

  * AC300 (tested)

  * AC200 (tested)

  * EB3A (tested)

  * EP500 (untested)

  * EP500P (tested)

  * EP600 (some values still missing)

* supported BLUETTI functions

  * commands

    * ac output on/off

    * dc output on/off

  * states

    * ac input power

    * dc input power

    * ac output power

    * dc output power

    * dsp firmware version

    * arm firmware version

    * serial number

    * device type

    * power generation

    * total battery percent



## Getting Started



### Configuration



Create a copy of config.sample.h and name it config.h

Change at least the device type to fit your Bluetti device.



### Compiling and Flashing to ESP32



#### Arduino IDE



You will need to install a board support package for your ESP32. Additionally the following libraries are needed: 



* https://github.com/tzapu/WiFiManager

* https://github.com/knolleary/pubsubclient

* https://github.com/ayushsharma82/AsyncElegantOTA

* https://github.com/me-no-dev/ESPAsyncWebServer

* https://github.com/me-no-dev/AsyncTCP/archive



Change the partition scheme with Tools -> Partition Scheme to



* Minimal SPIFFS (1.9 MB App with OTA/ 190KB SPIFFS)



![Wifi Manager start menu](doc/images/partition.png)



This setting is required because the Bluetooth stack already uses a lot of the ESP32 memory.



Optional: Do changes in config.h file. The device can be set by changing 'BLUETTI_TYPE'.



Finally upload the Sketch to your ESP32.



*INFO*: Until now only BLUETTI_AC300, BLUETTI_EP500P was tested. If you own one of the supported devices please let me know if it works.



#### PlatformIO



Compiling

```

$ pio run

```



Flashing Factory Image

```

$ esptool.py write_flash 0x0 build/Bluetti_ESP32_Bridge.factory.bin

```



Updating only App (don't delete settings)

```

# Write Partition A

$ esptool.py write_flash 0x10000 build/Bluetti_ESP32_Bridge.ota.bin

...

# Write Partition B

$ esptool.py write_flash 0x1F0000 build/Bluetti_ESP32_Bridge.ota.bin

```



The configuration interface also offers OTA updates. You can flash also `build/Bluetti_ESP32_Bridge.ota.bin` there. If you already configured your device you can use `http:///command

  * ac_output_on

  * dc_output_on



#### State

States are published to

* /bluetti//state

  * ac_output_on

  * dc_output_on

  * dc_input_power

  * ac_input_power

  * ac_output_power

  * dc_output_power

  * serial

  * dsp_version

  * arm_version

  * power_generation

  * total_battery_percent



## Display

Config Display:

* By default, display is disabled. 

* Configurations (customize of file Bluetti_ESP32/config.h): 

  * Enable display: uncomment #define DISPLAYSSD1306 1

  * Enable reset of display on init: uncomment DISPLAY_RST_PORT

    * Known needed for LoRa TTGO v1.0

  * set SCL & SDA ports: default ports are set to SCL=4 & SDA5, to change update DISPLAY_SCL_PORT and DISPLAY_SDA_PORT 



Display functionality:

* Show current assiged IP address (AP mode or normal)

* Show different wifi connection logo, depending on the mode its in and wifi Strength in normal mode (4 bars)

* Show the running time of the device in the format "11d12h15m" Currently max until 49 days as this is the time millis() is reset. 

* Show status message, currently shows the init and running status, also BLEscan when scanning 

* a progressbar is available but currently not used anywhere. (to see where it can be used)

* Show bluetooth icon status. Connected is static, blinking is trying to connect, together with message in case of scanning.

* Show MQTT icon status. Connected is static, blinking is trying to connect.



Example display screen:

![DisplayImage](doc/images/display.jpg)



## TODO



* add full feature set to device files

* adding support for SD-Card reader, for writing csv data to an sd-card

* adding logging poll commands



## Disclaimer



The code within this repository comes with no guarantee, use it on your own risk.



Don't touch these firmwares if you don't know how to put the device in the programming mode if something goes wrong.

As per the GPL v3 license, I assume no liability for any damage to you or any other person or equipment.