Home Assistant button for OpenBeken BL0937/BL0942 energy counter reset

Question 1

Use Home Assistant to publish the energy-reset command over MQTT. OpenBeken accepts commands on the device’s cmnd topic.

Answer

Use Home Assistant to publish the energy-reset command over MQTT. OpenBeken accepts commands on the device’s cmnd topic.

Question 2

Publish to your device’s cmnd topic as configured in MQTT. “Just send any command you want via cmnd topic.” Use cmnd for control, not stat or tele. This ensures the device treats the message as a command. [Elektroda, p.kaczmarek2, post #20827399]

Answer

Publish to your device’s cmnd topic as configured in MQTT. “Just send any command you want via cmnd topic.” Use cmnd for control, not stat or tele. This ensures the device treats the message as a command. [Elektroda, p.kaczmarek2, post #20827399]

Question 3

OpenBeken exposes a specific reset command for your BL0937/BL0942 build. Send that command as the payload to the device’s cmnd topic. Follow the linked tutorial and confirm the exact command string on your device. If the string is wrong, the counter will not reset. [Elektroda, p.kaczmarek2, post #20827399]

Answer

OpenBeken exposes a specific reset command for your BL0937/BL0942 build. Send that command as the payload to the device’s cmnd topic. Follow the linked tutorial and confirm the exact command string on your device. If the string is wrong, the counter will not reset. [Elektroda, p.kaczmarek2, post #20827399]

Question 4

Yes. Use Mosquitto_pub, Node-RED, or any MQTT client to publish the reset command. Target the device’s cmnd topic and send the payload. This is identical to the Home Assistant approach. [Elektroda, p.kaczmarek2, post #20827399]

Answer

Yes. Use Mosquitto_pub, Node-RED, or any MQTT client to publish the reset command. Target the device’s cmnd topic and send the payload. This is identical to the Home Assistant approach. [Elektroda, p.kaczmarek2, post #20827399]

Question 5

Check three things. First, the topic is cmnd, not stat or tele. Second, your command string matches the firmware’s expected reset command. Third, the device is online and connected to your broker. If topic or command is wrong, nothing happens. Fix those and retry. [Elektroda, p.kaczmarek2, post #20827399]

Answer

Check three things. First, the topic is cmnd, not stat or tele. Second, your command string matches the firmware’s expected reset command. Third, the device is online and connected to your broker. If topic or command is wrong, nothing happens. Fix those and retry. [Elektroda, p.kaczmarek2, post #20827399]

Question 6

Yes—support is planned for two families: Realtek RTL8710 and ESP. They have lower priority right now. Work on RN8209C is active. Contributors with C skills can help move items faster. [Elektroda, p.kaczmarek2, post #20858266]

Answer

Yes—support is planned for two families: Realtek RTL8710 and ESP. They have lower priority right now. Work on RN8209C is active. Contributors with C skills can help move items faster. [Elektroda, p.kaczmarek2, post #20858266]

Question 7

Offer hardware and testing details. Share your C experience if you can assist coding. Send a private message with your contact so collaboration can move to Google Chat or similar for faster responses. [Elektroda, p.kaczmarek2, post #20942516]

Answer

Offer hardware and testing details. Share your C experience if you can assist coding. Send a private message with your contact so collaboration can move to Google Chat or similar for faster responses. [Elektroda, p.kaczmarek2, post #20942516]

Question 8

Not currently. The external Web App isn’t on LittleFS yet. The goal is to make LittleFS hosting possible as an option. Review the related thread for approaches if you want on-device hosting. [Elektroda, p.kaczmarek2, post #20937914]

Answer

Not currently. The external Web App isn’t on LittleFS yet. The goal is to make LittleFS hosting possible as an option. Review the related thread for approaches if you want on-device hosting. [Elektroda, p.kaczmarek2, post #20937914]

Question 9

It’s designed to fit entirely on LittleFS. “The Web App is minimal because we want to be able to host it entirely on OBK LittleFS.” A Bootstrap skin can be added, but a minimal mode must remain. [Elektroda, p.kaczmarek2, post #20937875]

Answer

It’s designed to fit entirely on LittleFS. “The Web App is minimal because we want to be able to host it entirely on OBK LittleFS.” A Bootstrap skin can be added, but a minimal mode must remain. [Elektroda, p.kaczmarek2, post #20937875]

Question 10

Keep existing functionality and improve readability. You may extend features while preserving core behavior. Reference: openbekeniot.github.io/webapp/devicesList.html. Submit changes that maintain usability for current users. [Elektroda, p.kaczmarek2, post #20937875]

Answer

Keep existing functionality and improve readability. You may extend features while preserving core behavior. Reference: openbekeniot.github.io/webapp/devicesList.html. Submit changes that maintain usability for current users. [Elektroda, p.kaczmarek2, post #20937875]

Question 11

A slight build issue affects the T variant and is tracked as GitHub issue #987. It shouldn’t block MQTT command sending. If you build from source, review that thread before testing changes. [Elektroda, p.kaczmarek2, post #20858266]

Answer

A slight build issue affects the T variant and is tracked as GitHub issue #987. It shouldn’t block MQTT command sending. If you build from source, review that thread before testing changes. [Elektroda, p.kaczmarek2, post #20858266]

Question 12

One user reported multiple recent AliExpress orders containing Realtek-based plugs and switches. Treat this as a market signal, not a guarantee. Plan for RTL support where it fits your use. [Elektroda, erdeidominik1999, post #20889326]

Answer

One user reported multiple recent AliExpress orders containing Realtek-based plugs and switches. Treat this as a market signal, not a guarantee. Plan for RTL support where it fits your use. [Elektroda, erdeidominik1999, post #20889326]

Question 13

After publishing the reset command, read the total energy again in Home Assistant or via MQTT. The original goal is a BL0937 total reset, so totals should reflect the change. [Elektroda, erdeidominik1999, post #20827395]

Answer

After publishing the reset command, read the total energy again in Home Assistant or via MQTT. The original goal is a BL0937 total reset, so totals should reflect the change. [Elektroda, erdeidominik1999, post #20827395]

Question 14

Yes. Create a time-based automation that calls mqtt.publish to your device’s cmnd topic. Use monthly or weekly triggers to match billing. Ensure the command payload matches your firmware’s reset command. [Elektroda, p.kaczmarek2, post #20827399]

Answer

Yes. Create a time-based automation that calls mqtt.publish to your device’s cmnd topic. Use monthly or weekly triggers to match billing. Ensure the command payload matches your firmware’s reset command. [Elektroda, p.kaczmarek2, post #20827399]

Home Assistant button for OpenBeken BL0937/BL0942 energy counter reset

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