No catch. All the code runs locally, and the communication happens over WiFi. I could set it up to work over WAN, but didn't really see the need for it.
Please can you make a video that how to increase flash memory and ram of an Arduino uno, I just searched the entire RU-vid but not get the proper solution. I am facing a problem of low space in Arduino uno because my program is greater than 32 KB.
I am trying to work with ESP32 to send MQTT messages, but for now it doesn't work. this could be a new idea for the nexr video, if you have. Thanks for all Very interesting your videos.