This system used to detect anomaly obtained in the temperature in the freezer and send an alert via message & tweet.
How to connect the STM32 LoRa Discovery Kit to AWS IoT using EC2 and MQTT
In this project I use RASPBERRY PI and AWS to control a food dehydrator from Android. Data are send to S3 and publisher write status to IoT.
Allow users to build complex logic in a hub/gateway device without doing any programming. Includes support for the NXP IoT multi-sensor.