2026.07.23

🚀 Features

Add all known Victron products (based on VictronConnect App)

• Feature: add SmartShunt 300A/50mV IP65 to list of known VE.Direct devices (#2569)
• Feature: add SmartSolar 250/60 rev3 and 250/70 rev3 to list of known VE.Direct devices (#2604)
• Feature: update and add all known products from VictronConnect

🐛 Fixes

• fix: SDM Powermeter not working

Zendure

• Bugfix: Zendure: Accept non-static message ids (#2575)
• Bugfix: Zendure: Increase allowed length of appkey to 16 characters (#2593)
• Bugfix: Zendure: Fix stale-data false positives by making timeout configurable per provider (#2552)

🛠 Under the hood

• build(deps): bump mikepenz/release-changelog-builder-action (#2544)
• build(deps): bump actions/checkout from 6 to 7 (#2606)
• build(deps): bump mikepenz/release-changelog-builder-action (#2609)
• build(deps): bump actions/cache from 5 to 6 (#2615)
• build(deps): bump schneegans/dynamic-badges-action from 1.8.0 to 1.9.0 (#2637)
• build(deps): bump actions/setup-node from 6 to 7 (#2644)
• build(deps): bump actions/setup-python from 5 to 7 (#2649)

2026.05.18

⚡ Breaking Changes

• BREAKING CHANGE: Feature: GridCharger: Use configured battery charge current limit (#2524)

🚀 Features

• Feature: VeDirect: Enable battery voltage remote sensing (#2460)
• Feature: DPL: make standby configurable for battery-powered inverters

Victron - Limit battery charge current

• Feature: Victron Solarcharger: set battery charge-current-limit (#1658)
• Feature: Battery: MQTT charge current limit (#2525)

Zendure

• Zendure: Feature: Added support for official Zendure API
• Zendure: Feature: Added Battery Protection Mode to prevent discharging packs below configured min SOC
• Zendure: Keep battery at 100% for configured time during charge through to allow balancing

PSRAM

• add build env option 'generic_esp32s3_usb_octal_psram' (#1758)
• add build env 'generic_esp32s3_usb_quad_psram' (#2515)
• publish PSRAM stats via MQTT + HA auto-discovery (#2522)

🐛 Fixes

• Fix: Websocket: Battery livedata can not be refreshed when read-only is disabled
• Fix: Powermeter API: Do not leak sensitive data to unauthorized API clients (#2452)

🌎 Web Application

• webapp: hide PSRAM info when 0 (not configured)
• webapp: show PSRAM details (#2523)

🛠 Under the hood

• DPL: Refactor state machine to determine battery and dc bus usage (#2340)
• build(deps): bump mikepenz/release-changelog-builder-action (#2463)
• build(deps): bump actions/github-script from 8 to 9
• build(deps): bump softprops/action-gh-release from 2 to 3
• Update trusted suppliers list for OpenDTU Fusion
• increased chunksize to prevent warings during build
• Prepare Release 2026.05.18

2026.03.31

Upstream

This release includes upstream OpenDTU v26.3.30.

🚀 Features

• Feature: Victron VM-3P75CT: Reduce minimum poll interval to 100ms (#2410)
• Add support for HMS-2000D-4T inverters with serial prefix 0x1166

🐛 Fixes

• Fix: Zendure: Adjust bypass handling during fullcharge (#2342)
• Fix: Websockets did not work on latest iOS versions
• Fix: full solar passthrough configuration fault (#2299)
• Fix: WebSocket endpoints missing setAuthType for digest authentication
• Fix: WebSocket endpoints missing setAuthType for digest authentication
• fix URL in greek language pack
• Fix: Compile webapp script
• Fix: Missing webapi requesthandler casts

🌎 Web Application

• webapp: Update dependencies
• webapp: Prevent compile errors on newer tsc
• webapp: Update dependencies
• webapp: Update dependencies
• webapp: Update dependencies
• webapp: Update dependencies
• webapp: Change build config to match current vue pre-definitions
• webapp: NTP admin did not receive proper headers
• webapp: add app.js.gz
• webapp: Use WebSocketService for Battery, SolarCharger and GridCharger
• webapp: Add response error handling to getTimezoneList()
• webapp: cleanup properly when unmounted in BatteryView, GridChargerView, SolarChargerView
• webapp: Add response error handling to getTimezoneList()
• webapp: add app.js.gz

🛠 Under the hood

• Allow log level configuration for async websockets and async tcp stack
• Updated discord link to delegate user directly into the right channel
• ESP32Async/ESPAsyncWebServer @ 3.9.2
• Merge branch 'pr2905' into dev
• Upgrade ESP32Async/ESPAsyncWebServer from 3.9.2 to 3.9.3
• Upgrade espMqttClient from 1.7.0 to 1.7.2
• Upgrade olikraus/U8g2 from 2.36.12 to 2.36.15
• Update pl.lang.json
• Merge branch 'pr2961' into dev
• Merge branch 'pr2953' into dev
• Added Serial Prefix to readme
• Upgrade ESP32Async/ESPAsyncWebServer from 3.9.3 to 3.9.6
• Upgrade olikraus/U8g2 from 2.36.15 to 2.36.17
• Rework NTP handling
• Upgrade ESP32Async/ESPAsyncWebServer from 3.9.6 to 3.10.0
• build(deps): bump actions/download-artifact from 5 to 7
• build(deps): bump actions/cache from 4 to 5
• build(deps): bump dessant/lock-threads from 5 to 6
• build(deps): bump actions/checkout from 5 to 6
• build(deps): bump mikepenz/release-changelog-builder-action
• build(deps): bump actions/upload-artifact from 4 to 7
• build(deps): bump mikepenz/release-changelog-builder-action
• build(deps): bump actions/download-artifact from 7 to 8
• Upgrade ESP32Async/ESPAsyncWebServer from 3.10.0 to 3.10.3
• Upgrade bblanchon/ArduinoJson from 7.4.2 to 7.4.3
• Upgrade olikraus/U8g2 from 2.36.17 to 2.36.18
• Upgrade nrf24/RF24 from 1.4.11 to 1.5.0
• Upgrade arkhipenko/TaskScheduler from 3.8.5 to 4.0.4
• Upgrade actions/checkout from v5 to v6
• Upgrade actions/setup-node from v4 to v6
• Upgrade node to 24 in github actions
• Upgrade actions/setup-python from v5 to v6
• Upgrade actions/stale from v9 to v10
• Upgrade dessant/lock-threads from v5 to v6
• Upgrade actions/cache from v5 to v6
• Upgrade actions/upload-artifact from v4 to v7
• Upgrade mikepenz/release-changelog-builder-action from v5 to v6
• Upgrade actions/download-artifact from v4 to v8
• Updated copyright information
• Adjusted copyright information
• Merge tag 'v26.3.28' into AndreasBoehm/merge-upstream-v26.3.28
• WebApi Limit: Enforce that limit must be > 0
• Remove user specific tokens from release workflow
• [Add all required permissions to release workflow](https://git...

2025.10.11

Upstream

This release includes upstream OpenDTU v25.9.11.

🚀 Features

• Feature: add support for Trucki T2HG/T2MG
• Feature: Zendure: Add support for AB2000X

🛠 Under the hood

• Change victron and smahm powermeter namespace
• add .idea folder to .gitignore
• Generalize Huawei to GridCharger
• Add inverter firmware version field to bug report template
• build(deps): bump mikepenz/release-changelog-builder-action
• Prepare Release 2025.10.11

2025.09.16

Upstream

This release includes upstream OpenDTU v25.9.11.

⚡ Breaking Changes

• BREAKING CHANGE: WebAPI endpoint /api/limit/config requires different parameters

🚀 Features

• Feature: Allow setting of permanent power limit on new firmware versions for HMS inverters
• Feature: DPL: make standby configurable for smart-buffer-powered inverters
• Feature: Display: Show battery SoC (alternating with power meter) (#2122)
• Feature: R48xx: increase upper power limit to 4000W
• SolarCharger: MQTT: accept negative values for output_current and output_power (#2183)

Zendure

• Feature: Zendure: Add support for AB1000S
• Zendure: reworked chargethrough mode

🐛 Fixes

• DPL: reduce/increase limits of solar and smart-buffer inverters based on current AC power
• Fix: DPL: Overscaling not able to reduce power
• Fix: DPL: really ignore hysteresis when inverter should be shutdown
• Fix: DPL: inverters disconnected from the grid are non-eligible
• Fix: enforce configured discharge limit even without BMS
• Fix: remove duplicated square brackets from VE.Direct log messages
• Fix: make logging more leightweight using large shared buffer
• Fix: R48xx: treat configured limits as output limits
• Fix: make logging more leightweight using large shared buffer
• Fix: Dont allow HA base topic without trailing slash
• Fix: Corrected typo in string
• Fix: typo in logging tag of PinMappingClass

🌎 Web Application

• webapp: translate logging modules in admin view
• webapp: fix: return log level for more than 5 modules
• webapp: apply solarized-dark colors to web console
• webapp: Update dependencies
• webapp: Update dependencies
• webapp: Update node dependency
• webapp: Update dependencies
• webapp: Updated to latest sass version
• webapp: Simplify eventlog display
• webapp: Simplify line class detection in console view
• webapp: Make compiler happy
• webapp: Make compiler happy
• webapp: Doublecheck upload files bounds
• webapp: Use correct method scope
• webapp: Doublecheck for undefined behavior
• webapp: Fix lint error
• webapp: Make compiler happy
• webapp: Update dependencies
• webapp: Comment bootstrap workaround
• webapp: Simplify authentication code
• webapp: Configure additional compression
• webapp: Add file type validation for OTA firmware uploads
• webapp: Restore OTA firmware uploads functionality
• webapp: Fix exception on file upload select
• webapp: Minify json configs before upload
• webapp: Remove unused variable
• webapp: add app.js.gz
• webapp: fix yarn errors after lint upgrade
• webapp: update node version to 24 in prettier workflow
• webapp: Fix for code scanning alert no. 24: Incomplete string escaping or encoding
• webapp: revert firmware filename check in WebApi

🛠 Under the hood

• Add serial number prefix 114a to HMS_2CH
• Improvement: add firmware compatibility to README
• Recommend firmware version 1.1.12
• Indicate persistent limit with firmware version 2.0.4 are working
• Add Yarn Prettier badge to readme
• Merge branch 'pr2713' into dev
• Merge branch 'pr2675' into dev
• update discord link to point to expected channel
• language packs: fix links to github to point to downstream project
• R48xx: refactor auto power control for readability
• update discord link to point to expected channel
• Remove comment which doesn't make sense at this posistion
• Use pre-defined literals in webapi
• Improvement: Battery: unify charge current limit handling across providers
• Added hint for breaking change
• [Add GitHub Copilot instructions and environment setup workflow](https://github.com/ho...

2025.06.11

🚨 Partition Layout Change

Coming from firmware version 2024.06.03 or older *1), you cannot upgrade to this release (or any future release) by performing an over-the-air (OTA) update using the web interface! Read and follow the upgrade instructions, where additional information is available as well.

If you upgraded to version 2024.08.18 or newer already *2), you should be good to perform an OTA update using the web interface (unless you are using the generic_esp32_4mb_no_ota firmware variant).

*1) Technically: If you are still using the "old" partition layout where the sketch size is only 1,920 kB. See Info -> System in the web UI to know your current sketch size.
*2) Only when upgraded using the respective .factory.bin image over a wired connection to the ESP32, such that the partition layout was actually updated alongside the firmware.

Upstream

This release includes upstream OpenDTU v25.5.10.

⚡ Breaking Changes

• BREAKING CHANGE: Logging newline changed from "\r\n" to "\n"

🚀 Features

• Feature: Add more DPL settings to HASS autodiscovery

Huawei R48xx PSU

• Feature: R48xx: process board properties into web UI and MQTT
• Feature: R48xx: show input frequency in web UI
• Feature: R48xx: support turning on/off via CAN
• Feature: R48xx: support for fan control
• Feature: R48xx: support for input limit command
• Feature: R48xx: read max current multiplier from device
• Feature: R48xx: process device's row and slot number
• Feature: R48xx: use shutoff over CAN
• Feature: R48xx: introduce concept of reachability
• Feature: R48xx: auto-update rectifier with settings
• Feature: R48xx: add power control modal to web UI

Improved Logging

• Feature: Rewrite virutal console to support new line break and colored highlighting
• Feature: Redirect all ESP log output to the MessageOutput handler
• Feature: Allow setting the log level for the different modules at runtime

Zendure

• Feature: ZendureBattery - added support for AB2000S
• Feature: ZendureBattery - added config switch for buzzer and refined some translations
• Feature: Zendure: add 'read-only' and 'only-once' control modes

🐛 Fixes

• Fix: Victron power meter: skip unexpected Modbus UDP answers
• Fix: motivate browsers to reload web app resources
• Fix: DPL: always re-compute and save full solar-passthrough state
• Fix possible race condition when enabling Admin Mode AP
• Fix: When enabling admin mode, the search for the STA was automatically disabled
• Fix: Prevent unpredicted behavior on overflows of millis()
• Fix: Allow negative reactive power for inverters..
• Fix: Prevent crash when performing a lot of inverter edits
• Fix vector reservation for logging modules
• Fix: DPL: Ignore assumed solar inverter power when not producing
• Fix: get only the first VE.Direct off reason as readable text
• Fix: typo in logging tag of PinMappingClass
• Fix: R48xx: bring back efficiency unit to web UI and log
• Fix: R48xx: publish input frequency
• Fix: webapp: grid charger: scroll to top after saving
• Fix: R48xx: allow disabling auto-power mode
• Fix: JBD BMS: fix logic that caused to always print "unexpected state"
• Fix: increase HTTP+JSON power meter stack size
• Fix: increate HTTP power meter stack sizes
• Fix: R48xx: increase stack size to prevent crashes

Zendure

• Fix: ZendureBattery - corrected wrong product id for Hyper2000 and added secondary id
• Fix: ZendureBattery - fixed bypass mode feedback
• Fix: ZendureBattery - corrected product id for AOI 2400 (thanks @traxanos)
• Fix: ZendureBattery - corrected typo in Ace1500 (was named as Ace2000)
• Fix: ZendureBattery - fixed extraction of current bypass state
• Fix: ZendureBattery - send SoC levels only once and removed trailing coma
• Fix: ZendureBattery: Fixed serial for AIO integrated battery (use ABB3 instead of R04Y, as this belongs to the controller) and updated product name
• Fix: ZendureBattery: Only use log messages if device is known to be compatible and fixed some typos

🌎 Web Application

• webapp: German locale: improvements and typo fixes
• webapp: German locale: be informal
• webapp: fix broken reference in locales
• webapp: Allow scrolling in horizontal direction in console window
• webapp: optimize syslog settings
• webapp: Extend language packs for syslog messages
• webapp: Update dependencies
• webapp: Add hint text for the core log level
• webapp: Make css for home view only available for home view
• [webapp: Add addi...

2025.04.17

🚨 Partition Layout Change

Coming from firmware version 2024.06.03 or older *1), you cannot upgrade to this release (or any future release) by performing an over-the-air (OTA) update using the web interface! Read and follow the upgrade instructions, where additional information is available as well.

If you upgraded to version 2024.08.18 or newer already *2), you should be good to perform an OTA update using the web interface (unless you are using the generic_esp32_4mb_no_ota firmware variant).

*1) Technically: If you are still using the "old" partition layout where the sketch size is only 1,920 kB. See Info -> System in the web UI to know your current sketch size.
*2) Only when upgraded using the respective .factory.bin image over a wired connection to the ESP32, such that the partition layout was actually updated alongside the firmware.

Upstream

This release includes upstream OpenDTU v25.4.10.

🐰🐣 Features

• Feature: Support Zendure Solarflow Battery with local MQTT
• Feature: add current to MQTT battery provider
• Feature: support Victron VM-3P75CT Power Meter
• Feature: chunk webconsole messages in websocket
• Feature: 3-phase SDM: read SDM_TOTAL_POWER
• Feature: DPL: respect immediate charging request
• Feature: add SmartShunt 300A/50mV to list of known VE.Direct devices
• Feature: Added polish language pack (thanks to @AdamWitek77)

🐛 Fixes

DPL

• Fix: use current AC for smart buffer reduction
• Fix: ignore non-eligible inverters in all calculcations
• Fix: add smart buffer output to total DPL output
• Fix: cannot un-govern solar-powered inverters
• Fix: do not retry limit commands
• Fix: make getDischargeCurrentLimit() readable and return expected value
• Fix: prevent underflow in solar charger output calculation
• Fix: Prevent underflows in getMaxIncreaseWatts() methods
• Fix: solar-powered inverters are non-eligible at nighttime
• Fix: ignore stats of non-eligible inverters
• Fix: do not rely on unreachable inverters for voltage reading
• Fix: skip non-eligible inverters in unconditional solar passthrough
• Fix: ignore hysteresis when inverter should be shutdown
• Fix: dynamic threshold for solar inverters
• Fix: Solar inverter should report its minimal power when started in the morning
• Fix: don't assume max increase for solar inverter w/o overscaling
• Fix: force restart of battery and smart-buffer powered inverters

VE.Direct Solar Charger

• Fix: unused state of operation, missing unit, unused std::optional
• Fix: VeDirectFrameHandler: Reject non-ASCII characters
• Fix: use _logId as key to prevent phantom device stats from persisting
• Fix: ignore stale stats
• Fix: prioritize VE.Direct network power
• Fix: account negative output power of VE.Direct charge controllers

Logging

• Fix: web console: prevent concurrent websockets
• Fix: webconsole websocket heap consumption issue
• Fix: flush Serial after each line
• Fix: en-/disable DTU verbose logging w/o restart

Other

• Fix: disable temperature readings for ESP32-S3
• Fix: handle MQTT message fragmentation
• Fix: Disable SPI3_HOST with ESP32-S2 for SpiManager
• Fix: empty data point container shall return 0 for getLastUpdate()
• Fix: DTU serial change not possible
• Fix: scroll to top when battery config is saved
• Fix: MQTT battery SoC precision calculation
• Fix: bump ESPAsyncWebServer to v3.7.6

🌎 Web Application

• webapp: show relevant requirements for solar powered inverters
• webapp: beautify controls on web console view
• webapp: remove (more) colons from forms
• webapp: use same appearance for all dataAge displays
• webapp: introduce and use DataAgeDisplay component
• webapp: use pluralization of data age UI component
• webapp: remove obsolete DataAge language tokens
• webapp: Update dependencies
• webapp: Update dependencies
• webapp: Update dependencies
• webapp: Update dependencies
• webapp: Update dependencies
• webapp: Update dependencies

🛠 Under the hood

• adopt new signature of MqttSubscribeParser.OnMessageCallback
• Upgrade ESP32Async/ESPAsyncWebServer from 3.6.2 to 3.7.0
• Upgrade ESP32Async/ESPAsyncWebServer from 3.7.0 to 3.7.3
• [Upgrade ESP32Async/ESPAsyncWebServ...

2025.02.10

🚨 Partition Layout Change

Coming from firmware version 2024.06.03 or older *1), you cannot upgrade to this release (or any future release) by performing an over-the-air (OTA) update using the web interface! Read and follow the upgrade instructions, where additional information is available as well.

If you upgraded to version 2024.08.18 or newer already *2), you should be good to perform an OTA update using the web interface (unless you are using the generic_esp32_4mb_no_ota firmware variant).

*1) Technically: If you are still using the "old" partition layout where the sketch size is only 1,920 kB. See Info -> System in the web UI to know your current sketch size.
*2) Only when upgraded using the respective .factory.bin image over a wired connection to the ESP32, such that the partition layout was actually updated alongside the firmware.

Upstream

This release includes upstream OpenDTU v25.2.3.

🚀 Features

• Add support for smart buffer batteries (e.g. Marstek B2500, Anker Solix, Zendure, etc.)
  • Feature: DPL support for smart-buffer-batteries (#1606)
• Feature: Add prefix 1420 to HMS-4 channel inverters

🐛 Fixes

• fix: Make sure limit values are consistent and not above 100%
• Fix: R48xx: only interlock against battery-powered inverters
• Fix: DPL mode 2 for smart-buffer-powered inverters

🌎 Web Application

• webapp: set overscaling threshold default value
• webapp: hide overscaling thresh. for inv with PDL
• webapp: explain "Use battery at night.." (#1615)

🛠 Under the hood

• Use new name for ESPAsyncWebServer
• Move network reconfiguration to main loop to prevent crashes
• Merge branch 'pr2513'
• Added greek language pack
• Harmonise all language packs
• Upgrade ESP32Async/ESPAsyncWebServer from 3.6.0 to 3.6.2
• README: add endorsement for Fusion hardware
• Update espressif32 from 6.9.0 to 6.10.0
• Improvement: handle stale issues and prs
• Manually applied latest changes in PR #2509
• Merge upstream tag 'v25.2.3'
• add "State of Operation", "Float voltage" and "Absorption Voltage" to solar charger (#1576)
• Improvement: DPL: encapsulate SolarPassThrough check
• Improvement: DPL unconditional-passthrough method name
• Prepare Release 2025.02.10

2025.01.23

🚨 Partition Layout Change

Coming from firmware version 2024.06.03 or older *1), you cannot upgrade to this release (or any future release) by performing an over-the-air (OTA) update using the web interface! Read and follow the upgrade instructions, where additional information is available as well.

If you upgraded to version 2024.08.18 or newer already *2), you should be good to perform an OTA update using the web interface (unless you are using the generic_esp32_4mb_no_ota firmware variant).

*1) Technically: If you are still using the "old" partition layout where the sketch size is only 1,920 kB. See Info -> System in the web UI to know your current sketch size.
*2) Only when upgraded using the respective .factory.bin image over a wired connection to the ESP32, such that the partition layout was actually updated alongside the firmware.

Upstream

This release includes upstream OpenDTU v25.1.14.

🚀 Features

• Add support for solar charger data from MQTT broker
  • restructure solar charger integration to support more providers
  • Feature: add support for MQTT solar chargers
• Feature: Add support for HERF-600 inverters
• Feature: Added support for HMS-450 inverters which begin with 1400
• Feature: show mqtt battery live view card
• Feature: show hint if device profile missing or not selected
• Feature: New handling of command queue
• Feature: Set Limit transfer only to "OK" if the queue does not contain any more commands
• Feature: Show inverter status and current power in overview (if multiple inverters are available)
• Feature: Detect if inverter supports 'Power Distribution Logic'
• Feature: Huawei grid charger: update values when submitting parameters

🐛 Fixes

• DPL Fixes
  • Revert changes to limit calculation for solar-powered inverters
    • revert "Fix: Don't check shading for max increase when inverter limit is below 15%"
    • Revert "Fix: assume small increase for shaded inverter"
  • Allow management of DPL-governed inverters while DPL is off
    • Fix: allow management of DPL inverters while DPL is off
    • Fix: really trigger standby only once on DPL shutdown
  • Fix: start nighttime discharge cycle only once per night
• Fix: Huawei grid charger efficiency value
• Fix: Huawei grid charger with MCP2515: avoid missing out on CAN messages
• Fix: Huawei grid charger: known last value ends transaction
• Fix: Remove temperature readings for ESP32-S2 modules
• Fix: Auto reboot was not triggered on pin mapping change
• Fix: Wifi.begin was called with wrong parameters
• Fix: Uptime overflow after ~50 days
• Fix: need to skip BOM also when migrating config
• Fix: Hint regarding required device profile is shown for profiles which don't need a device profile
• Fix: 'create release badge' action and show it (#1545)
• Fix: millis() rollover in smart shunt loop()
• Fix: align mqtt publish interval in webapp and API
• Fix: Really always execute the generate of the factory.bin file

🌎 Web Application

• Show totals in blue and producing inverters in green
• Fix: live card header bg matches upstream colors
• webapp: fix typo in "IgnoreSoc" label
• webapp: fix line break for reload button
• webapp: avoid undefined serial for InputSerial
• webapp: improve styling of hints on home view
• webapp: Update dependencies
• webapp: Update dependencies
• webapp: Update dependencies
• webapp: Update dependencies
• webapp: Update dependencies

🛠 Under the hood

• Fix: lint errors
• Fix: replace helgeerbe with hoylabs in tmpl URLs
• Make function getClientId const
• Organize includes
• Remove not required string generation
• Use correct variable to set AUTO_GIT_BRANCH
• change markdown table to github style
• Update table with supported inverters in library README.md
• add Sum of DC Power
• Disable queue debugging
• Remove extra semikolon
• Update bblanchon/ArduinoJson from 7.2.0 to 7.2.1
• Update bblanchon/ArduinoJson from 7.2.1 to 7.3.0
• Upgrade ESPAsyncWebServer from 3.3.22 to 3.3.23
• Upgrade ESPAsyncWebServer from 3.3.23 to 3.4.0
• Upgrade ESPAsyncWebServer from 3.4.0 to 3.4.1
• Upgrade ESPAsyncWebServer from 3.4.1 to 3.4.2
• Upgrade ESPAsyncWebServer from 3.4.2 to 3.6.0
• [Update nrf24/RF24 from 1.4.10 to 1.4.11](220cfbf7aed09...

2025.01.10

🚨 Partition Layout Change

Coming from firmware version 2024.06.03 or older *1), you cannot upgrade to this release (or any future release) by performing an over-the-air (OTA) update using the web interface! Read and follow the upgrade instructions, where additional information is available as well.

If you upgraded to version 2024.08.18 or newer already *2), you should be good to perform an OTA update using the web interface (unless you are using the generic_esp32_4mb_no_ota firmware variant).

*1) Technically: If you are still using the "old" partition layout where the sketch size is only 1,920 kB. See Info -> System in the web UI to know your current sketch size.
*2) Only when upgraded using the respective .factory.bin image over a wired connection to the ESP32, such that the partition layout was actually updated alongside the firmware.

Upstream

This release includes upstream OpenDTU v24.11.7.

⚡ Breaking Changes

• BREAKING CHANGE: remove default scaling/compensation for unused inputs
• BREAKING CHANGE: huawei grid charger with MCP2515 requires IRQ pin

🚀 Features

• Support for Huawei AC charger using the CAN Transceiver on OpenDTU Fusion CAN/Iso shield.
  • Feature: huawei grid charger: support serial CAN controller (Conflicts with CAN-based battery providers!)
• Support for HMS-1600/-1800/-2000 inverters with firmware 01.01.12
  • Feature: Detect if inverter supports 'Power Distribution Logic'
• Mitigate overscaling issues when used with "solar-passthrough batteries".
  • Feature: support configuration of the input power threshold for overscaling per inverter
  • Feature: Input power threshold for maxIncrease is less strict and respects the overscaling configuration per inverter
• Feature: show hint if device profile missing or not selected
• Feature: webapp: show hardware UART allocations
• Feature: hide inverter totals if no inverters configured
• Feature: webapp: warn about small lower power limits
• Feature: auto-detect SoC precision for MQTT Battery provider
• Feature: include MPPT power in debug log
• Feature: sub-second DTU poll interval resolution

🐛 Fixes

• Fix: wait for inverter stats before doing full solar-passthrough
• Fix: use battery when in full solar-passthrough
• Fix: need to skip BOM also when migrating config
• Fix: rename solar-passthrough losses to conduction losses
• Fix: DPL: proactively set known limit on inverters
• Fix: Huawei AC charger sends signed values
• Fix: webapp: DPL: config hint only for governed inverters
• Fix: wrong usage of 'isSunsetAvailable'
• Prevent solar powered inverters from getting stuck at low limits
  • Fix: Don't check shading for max increase when inverter limit is below 15%
  • Fix: assume small increase for shaded inverter
  • Fix: maxIncrease for solar inverter with PDL
  • Fix: maxIncrease for overscaling solar inverter
• Setups without a solarcharger interface configured will not try to do full-solar-passthrough
  • Fix: disable solar_passthrough_enabled by default
  • Fix: check config.Vedirect.Enabled for passthrough
• Fix: huawei grid charger: prevent deadlock on mutex

🌎 Web Application

• webapp: avoid undefined serial for InputSerial
• webapp: DPL: clean up obsolete language tokens
• webapp: DPL: use new terminology "governed" inverters
• webapp: show OpenDTU-OnBattery-specific config version
• webapp: improve styling of hints on home view
• webapp: allow to reduce MQTT publish interval down to 1 second
• webapp: add "-OnBattery" in "NotReady" language token
• webapp: fix warning message about pin mapping profile name length
• webapp: define pin mapping interface for Huawei and PowerMeter
• webapp: add proxy for /huaweilivedata location
• webapp: show precise data age for inverters

🛠 Under the hood

• DPL: beautify log by considering plural for amount of inverters
• DPL: optimize verbose logging output
• config.json: remove skipping BOM a second time
• introduce and use ConfigurationClass::migrateOnBattery()
• DPL: cache load-corrected voltage
• github actions: switch to ubuntu-24.04
• power meter serial SDM: whitespace/style cleanup
• delete .DS_Store
• match file "COPYING" to OpenDTU-OnBattery
• huawei grid charger: split controller and CAN driver
• huawei grid charger: make MCP2515 driver private to controller
• huawei grid charger: whitespace cleanup
• huawei grid charger: clean up #defines
• huawei grid charger: web API: remove unreachable code
• huawei grid charger: start HW interface abstraction
• [huawei grid charger: prepare to accept tx and rx pin config](h...