What is the best way to connect an PWA with multiple M5 Controllers
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 Hi, I will connect multiple M5 Atomic, Paper and Core Controller with my Progressive Web App. This all should work offline. Otherwise I would use MQTT over internet. OoT .. This is a little bit like "Offline Of Things". The only solution right now is for me to make one controller acting as master, hosting an socket server and serving a wifi access point? 
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 @mchott ESP_NOW in peer to peer mode. 
 I wrote this simple bare-bones application to share with other makers.
 https://github.com/teastainGit/ESP_NOWpeer2peer
 I have a Core Basic communicating with two M5Stamps in the same room, controlling space heaters and an HVAC vent damper position. etc.
 The github example is used in all three devices
