{
    "Library": "wheelencoder",
    "Description": "Wheel Encoder Library",
    "Sensor Class":
    {
        "WheelEncoder":
        {
            "Name": "Wheel Encoder",
            "Description": "Wheel encoders use non-contact methods to give rotation information. This sensor was developed for the DFRobot Wheel Encoder, though it could be used for any counting time-based task. When you instantiate a class of this type, the gpio pin specified is connected to an interrupt. Whenever a low to high transition occurs on the gpio pin, the internal counter is incremented by one. This class also includes a millisecond counter, so that you can correlate the number of counts to a time period for calculating an RPM or other value as needed.",
            "Aliases": ["SEN0038"],
            "Categories": ["other"],
            "Connections": ["gpio"],
            "Project Type": ["prototyping"],
            "Manufacturers": ["dfrobot"],
            "Kits": ["DFRobot 3PA", "DFRobot 4WD"],
            "Image": "wheelencoder.jpg",
            "Examples":
            {
                "Python": ["wheelencoder.py"],
                "Node.js": ["wheelencoder.js"],
                "C++": ["wheelencoder.cxx"],
                "C": ["wheelencoder.c"]
            },
            "Specifications":
            {
                "Vdd": {"unit": "v", "constant" : 5},
                "Itotal" : {"unit": "mA", "high": 20},
                "Resolution": {"unit": "ppr", "constant" : 20}
            },
            "Urls" :
            {
                "Product Pages": ["https://www.dfrobot.com/product-98.html"],
                "Datasheets": ["https://www.dfrobot.com/wiki/index.php/Wheel_Encoders_for_DFRobot_3PA_and_4WD_Rovers_(SKU:SEN0038)"],
                "Schematics": ["http://www.dfrobot.com/wiki/images/b/b9/FIT0029_Encoder_Schematics.png"]
            }
        }
    }
}