У вашего броузера проблема в совместимости с HTML5
In this video we upgrade the simple weather station that we built in a previous video (https://www.youtube.com/watch?v=GJEXHNWnWg0) by adding a relay. The relay in this case is triggered from the DHT11 sensor and is set to trigger when the relative humidity exceeds 39%. -~-~~-~~~-~~-~- Please watch: "Arduino Power Monitor" https://www.youtube.com/watch?v=EihF17x0NXA -~-~~-~~~-~~-~-