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ESP32 Versions and Memory

Manos1966 edited this page May 27, 2024 · 12 revisions

Due to the growing size of the code and the memory limitations of the common ESP32 boards (4Mb Flash) on the market today, we predict sometime in the future that, ESP32 boards with minimum 8Mb will be necessary to run the OpenDTU-onBattery code.

Such boards' naming will have the ESP32-S3 and -N8R, -N16R, -N32R indicating 8MB,16Mb or 32Mb Flash memory respectively.

ESP32-S3 Versions

ESP32 16MB vs 8MB Ali

Posibilities / Ready-Boards

You can put together your 16Mb system using individual components (example below)

Wiring_ESP32_Symbol - Victr1Victr2PylontechHuaweiRelaisCMT2300upd

Alternatively, there are a few 16Mb integrated boards available or, under development that combine many options. Some examples:

  • There is OpenDTU-Fusion Board available, currently without a CANbus/VE.Direkt:
OpenDTU-Fusion2

(CANBus/VE.Direct add-on board is currently (May 2024) undergoing Beta-testing): OpenDTU-Fusion CAN

  • There is OnBattery-Pro board (currently (May 2024) undergoing Beta-testing):

Note: current OpenDTU-OnBattery Software supports only two of the three Ve.Direct Ports of the board OnBatery-Pro

  • There is an "OpenDTUonBattery Platine mit Maximal-Ausbau DC/DC und JK-BMS Stecker" board with direkt JK-BMS and Huawei Rectifier option (currently (May 2024) under development):

28566-grafik

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