Using MQTT to send and receive data for your next project

Full Article :

Opensource.com - https://opensource.com/article/18/6/mqtt

Last November we bought an electric car, and it raised an interesting question: When should we charge it? I was concerned about having the lowest emissions for the electricity used to charge the car, so this is a specific question: What is the rate of CO2 emissions per kWh at any given time, and when during the day is it at its lowest?

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