Build a People Counter for $30 Using an ESP8266 and NodeMCU

A people counter is a device used to measure the number of bodies traversing an entrance, hallway, street corner, etc. If you need to know how many people exist in a space – this is your simple solution. Typically used in retail stores, large events,, and smart office buildings, this counting technology has provide insights to both the number of bodies in an environment and how they are behaving in said environment.

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