A quick demonstration of an ESP32 running Mongoose OS to send data from a door sensor to AWS IoT. Board was purchased from Adafruit, my workstation is running Linux.
** THIS PROTOTYPE ALSO WORKS WITH ESP8266! ** I use the ESP32 here only because I didn't find Mongoose OS until I was looking for ESP-IDF alternatives for my ESP32. I wish I'd found Mongoose 2 months ago when I was struggling with getting Esprino & NodeMCU to work well with AWS IoT on my ESP8266's.
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