WineNote: an IoT project to enhance the wine taste During the wine maturation process, cellar masters have to regularly check the wine level in their barrels to find out if it has decreased. This operation induces a major concern: the product oxidation happening while opening their barrels. Besides, this action is timeconsuming, as there are hundreds of barrels in a warehouse. In this context, the purpose of the WineNote project is therefore the estimation of the level using a completely noninvasive method. WineNote aims at introducing a new connected object that uses the barrel resonance. This way, cellar masters will be able to know when to top up their barrels without oxidizing their wine. They will only have to open the application using their smartphones or their computers. In this paper, we propose to present the IoT system which have been developed, and then to focus our attention on the software (signal processing algorithms) and hardware design of the node.

Monitoring of Temperature in Retail Refrigerated Cabinets Applying IoT Over OpenSource Hardware and Software The control of refrigeration in the food chain is fundamental at all stages, with special emphasis on the retail stage. The implementation of information and communication technologies (IoT, opensource hardware and software, cloud computing, etc.) is representing a revolution in the operational paradigm of food control. This paper presents a lowcost IoT solution, based on free hardware and software, for monitoring the temperature in refrigerated retail cabinets. Specifically, the use of the ESP8266WiFi microcontroller with DS18B20 temperature sensors is proposed. The ThingSpeak IoT platform is used to store and process data in the cloud. The solution presented is robust, affordable, and flexible, allowing to extend the scope of supervising other relevant parameters in the operating process (light control, energy efficiency, consumer presence, etc.).