ESP8266/32 (Home Assistant Switch) connected to PCF8574 controlling 8 AC relays

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Yes I know ESPHomeYaml exists, here is my naive attempt at making relays talk to HA!

Home Assistant Switch for 8 Relays: PCF8574 can be used to extend the GPIO of ESP8266/32 and here we use 8 ports of PCF8574 to control 8 Relay module

Code/Parts/Schematic: https://github.com/debsahu/PCF8574_8Relay

Video: https://youtu.be/6CzkeJei5i0

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There are also modules from aliexpress & co which are network controllable, eg https://www.aliexpress.com/item/Ethernet-Control-Module-LAN-WAN-Network-WEB-Server-Control-Module-RJ45-Port-and-8-Channel-Relay/32835720958.html?spm=2114.search0104.3.56.3fea2c88odbdNL&ws_ab_test=searchweb0_0,searchweb201602_2_10065_10068_10547_319_10059_10884_317_10548_10887_10696_321_322_10084_453_10083_454_10103_10618_10307_537_536_10902,searchweb201603_60,ppcSwitch_0&algo_expid=b429709e-8ff5-401e-bfc8-72dcfbd5d4af-8&algo_pvid=b429709e-8ff5-401e-bfc8-72dcfbd5d4af

Not wifi though.

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So cool. Same idea but this project is ESP8266/ESP32 based.