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these modules are what you need. zcd detector, and an optoisolated command for the triac
you still need to send a pulse at known time after the zcd with your mcu
https://robotdyn.fr.aliexpress.com/store/group/DIMMER/1950989_40000005016219.html
a regular "joke" is to say that "CE" means "China exported" and can have no real meaning. there are a lot of fakes around nowadays. your only sure method it to buy from reputable sellers like mouser or digikey.
some seems available :
https://octopart.com/search?q=ADS5404¤cy=USD&specs=0
https://octopart.com/search?q=AD9257¤cy=USD&specs=0
it really depends on the package and quantity you need.
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