SeByDocKy / pvbrain2

PVbrainV2 > [!IMPORTANT] > is an open source/openhardware project to monitor/control __ __ : > - Multiple inverters. > - And multiple BMS. > > -> _In theory any inverter or BMS with ESPhome support can be used with the PVbrain2._ > > It also adds the possibility of controlling up to 32 relays allowing for example to control an **A**utomatic **T**ransfer **S**witch (ATS) _(Offgrid return to the network)_. > > The PCB uses only crossover components or pluggable components in order to have easy setup/maintenance. > > The MCU used is an ESP32S3 running allowing communication over WiFi to (HA) natively. > -> _But can be added easily._ > > __The main features are :__ > - [x] Direct communication and control with Voltronic/Pipsolar, DEYE, SOFAR, GROWATT inverters via direct Ethernet cable. _(pvbrain has a built-in RS232 and RS485 => TTL)_ > - [x] CANbus support. Possibility to translate informations from old generation BMS into modern CANbus protocols (Pylontech 1.2, Pylontech +, SMA, Victron) > - [x] The VEdirect for models with an insulated adapter provided. > - [x] Important settings can be set directly from HA _(or the web server if enabled)_ . > - [x] Monitor multiple BMS _(tested with JKBMS but should work with antBMS, DalyBMS, PaceBMS or SeplosBMS)_ with an insulated adapter provided. > - [x] Detect multiple AC sources _(solar/network/other)_ via optocoupler modules (in order for example to do soft switching for the ATS part). > - [x] Monitor _via_ a JSY193, JSY194T module _(modbus)_ solar and network production. > - [x] Monitor _via_ a JSY231, Smartshunt module _(modbus)_ and _(VE.direct)_ battery energetic flows > - [x] Control up to 32x relays with two i2c extension SX1509, _that is_ for ATS control or the reversing mode of a modern inverter. _(Axpert max I & II for example)_ > - [x] A solar power diverter for pure resistive loads (eg. hot water tank) thanks to ROBOTDYN or SSR modules controlled in PWM, 0-10V. Can be easily extented for Modbus RTU model. > - [x] Smart EVSE regulation _for_ a ETEK ekepc2 module with AC active power, DC battery current or Pyranometer informations > - [x] Monitor your basement temperature/humidity/pressure with BME280 _(you can set up alarms just in case)_ . > - [x] Free I2C ports available for plugging in additional I2C sensors. > - [x] SPI port is also available. > [!NOTE] > This PCB uses the excellent ESPhome integrations done by : > - (Many BMS and inverter). > - (Expansion cards WK2132 and WK2168 ). > > The __PVbrain 2.0__ represents a joint work between of the and . > - With the help of several members of the . **For more information on the project, the pcb, the code and their use, please refer to the wiki.** Release PVbrain 2 Youtube Live event: _Video in French._ Software (ESPhome) installation steps: • __First of all be sure you have installed on your machine the ESP32 S3 driver from Sillicon Labs.__ __Classic procedure :__ > > Click here for show the Classic procedure. :arrow_heading_down: > > :back: > - :one: :heavy_minus_sign: Retrieve the PVbrain 2.0 zip (by right clicking) and save it into a new created folder, eg. /pvbrain2 > - :two: :heavy_minus_sign: Uncompress the zip file into your local folder (/pvbrain2) or into your/config/esphome folder of HASSIO (use samba share to transfer the uncompressed files). > - :three: :heavy_minus_sign: Open your esphome's secrets.yaml file and check if wifi_ssid, wifi_password and ap_password variables are correctly corresponding with your local WiFi informations. > - :four: :heavy_minus_sign: Edit the PVbrain2.yaml and comment/uncomment each package according to your own solar setup. > - :five: :heavy_minus_sign: Compile and upload the code on your ESP32 S3 device. > __Dummy procedure (for newbabies) :__ > > Click here for show the Dummy procedure. :arrow_heading_down: > > :back: > - :one: :heavy_minus_sign: Create/sign in a Github accompt. You can create it faster with OAuth2 via your google account for example. > - :two: :heavy_minus_sign: Open the following Gitpod link. > - The first time you will need also to sign in into gitpod framework for example with your previously created Github account. > - :three: :heavy_minus_sign: When logged into Gitpod, you will see during the ESPhome installation, some log lines printed in the terminal. > - Wait a couples of minutes to let finish the processus. > - When done, press the "Open Browser" located at the botton right of the Gitpod page. > - It should open a new webpage with the ESPhome Dashboard. > - :four: :heavy_minus_sign: On the ESPhome Dashboard, click first on "secret" button located at the top right corner. > - Replace "xxxxxxxx", "yyyyyyyy" and "zzzzzzzz" with your own WiFi SSID/password and AP informations (AP password will allow to access to your PVbrain2 if your WiFi/LAN is down). > - Be aware, WiFi password must be a minimum of 8 caractars. > - If not, you will need to change your WiFi password correspondly. > - Click on "save" and quit the secret page by clicking on the top left cross. > - :five: :heavy_minus_sign: Click on "Edit" for the PVbrain2 model. > - Comment and/or uncomment each package according to your own solar setup and save the file. (Tip: you can comment/uncomment several lines simultaneously by selecting the lines and press on CTRL + /) > - :six: :heavy_minus_sign: Plug your ESP32-S3 with a USB data cable first then the on top right corner, choose "Install" then on "Plug into this computer" to compile the firmware. It can be a long processus !!!. > - Wait a couple of minutes (it first compile the code at background during 3-4min) then it starts the flashing part. > - You should see a progression bar running when flashing. > - :seven: :heavy_minus_sign: You finished the flashing procedure. > - If you entered correctly your WiFi informations in the secrets.yaml file, you should see a notification in Home Assistant asking you to accept a new ESPhome device. > - Accept it... __You finished!!!!__ > > > Click here for show…