6-channel magnetic latching relay switch with metering - espc3

Special Note: This project involves 220V high-voltage electricity. Although the neutral wire is used as the reference ground, touching the low-voltage parts will not cause death. However, since there is no isolation, accidentally reversing the live and neutral connections is still quite dangerous. If you need to replicate this, please be extremely careful!!
 
I previously made this [Smart Home] 6-way WiFi controller with metering - JLCPCB EDA open-source hardware platform (oshwhub.com),
and it worked very well without any problems. However, for some unknown reason, the corresponding relay of the bathroom heater light might stick. I replaced the relay twice, but the problem persisted...
So I thought about making a new one... Then I wanted to try the highly praised magnetic latching relay... So I designed this board.
Compared to the previous version, this time I used the ESP32-C3-MINI as the main controller (if the ESP32 doesn't use the S2 or S3... the I/O seems insufficient), so I used the PCF8575TS for I/O expansion. The power metering continues to use the BL0942.
The CN8023B is used to drive the FH44L-1AT-L1 magnetic latching relay.
 
This test used optocoupler feedback to monitor the actual switching state.
ESPHOME is still used as the driver. Next, consider whether to solder the optocoupler feedback circuit on the back.
Currently, the optocoupler feedback uses a simple resistor in series with the optocoupler; with a 200K resistor,
the heat generated by this resistor when all six are on simultaneously will make the PCB warm and produce approximately 1.5W of power. Please consider whether to use this method.
Two ESPHOME configuration files are provided in the attachment: one for when soldering feedback is available, and one for when it is not.