Tuya Single Phase Energy Meter 6 In 1: CBU Chip Flashing & ESPHome Integration Issues

No hardware modifications are required if you are going to run BL0942SPI driver. All you need to do is:
1. flash the firmware
2. start driver BL0942SPI, probably in short startup command
3. you should already get readings, but it's good thing to calibrate, VoltageSet, etc commands

Sorry would I need to update the firmware since I last installed it for this to work.

I'm looking at this now,

Thanks

Web Application -> OTA -> drag and drop proper RBL for your platform

Great thanks, I've done that now on all units.

Do you think you can walk me through calibration and MQTT setup for HA?

Much appreciated!

Good job, no problem, I can tell you what to od next.
First calibration: Take a reliable meter, plug 60W bulb, then open Web App, Tools tab, and in the fields for calibration, enter true Voltage/Current/Power readings from a reliable meter. Done.
Then HA pairing:
[youtube]
https://www.youtube.com/watch?v=pkcspey25V4
[/youtube]
You can also take a glance here for general purpose tutorials:
https://www.youtube.com/@elektrodacom

Hi. I am trying a Tongou smartplug. (TuyaCBU + BL0942)
Flashed and activated with the "startDriver BL0942SPI" command, all was fine, until reboot.

Rebooted the smartplug, I don't receive any data about power consumption on my MQTT server.
If I try again startDriver "BL0942SPI", I obtain errors, but finally I receive data on my MQTT server.

This is the message:

Info:EnergyMeter:Read ENERGYMETER status values. sizeof(ENERGY_METERING_DATA)=32
Warn:EnergyMeter:Failed to read reg 1D: bad checksum FF wanted 8D
Error:EnergyMeter:Failed to write reg 1D val 55: read 11
Warn:EnergyMeter:Failed to read reg 19: bad checksum FF wanted 91
Error:EnergyMeter:Failed to write reg 19 val 8F: read 11
Info:MAIN:Started BL0942SPI.
OK


So I tryed "stopDriver BL0942SPI" and repeat "startDriver BL0942SPI" and the result is :

Info:EnergyMeter:Read ENERGYMETER status values. sizeof(ENERGY_METERING_DATA)=32
Error:CMD:command with name EnergyCntReset already exists!
Error:CMD:command with name SetupEnergyStats already exists!
Error:CMD:command with name ConsumptionThreshold already exists!
Error:CMD:command with name VCPPublishThreshold already exists!
Error:CMD:command with name VCPPrecision already exists!
Error:CMD:command with name VCPPublishIntervals already exists!
Error:CMD:command with name VoltageSet already exists!
Error:CMD:command with name CurrentSet already exists!
Error:CMD:command with name PowerSet already exists!
Warn:EnergyMeter:Failed to read reg 1D: bad checksum FF wanted 8D
Error:EnergyMeter:Failed to write reg 1D val 55: read 11
Warn:EnergyMeter:Failed to read reg 19: bad checksum FF wanted 91
Error:EnergyMeter:Failed to write reg 19 val 8F: read 11
Info:MAIN:Started BL0942SPI.
OK

Were measurements really correct? Reboot shouldn't break anything... is it still wrong after power off and on?