<https://iot-playground.com/forum/raspberry-pi-gpio-driver/965-easyiot-server-v0-9-and-raspberry-pi-3-model-b>
<http://schema.org/image>
<https://iot-playground.com/forum/raspberry-pi-gpio-driver/965-easyiot-server-v0-9-and-raspberry-pi-3-model-b?start=6>