{"product_id":"odroid-connectivity-852","title":"Odroid ULTRASONIC Ranging Module for Odroid GO [77911]","description":"\u003ch2\u003eUltrasonic Ranging Module HC - SR04\u003c\/h2\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUltrasonic ranging module HC - SR04 provides 2cm - 400cm non-contact measurement function, the ranging accuracy can reach to 3mm. The modules includes ultrasonic transmitters, receiver and control circuit. The basic principle of work: \u003c\/p\u003e\u003cp\u003e(1) Using IO trigger for at least 10us high level signal, \u003c\/p\u003e\u003cp\u003e(2) The Module automatically sends eight 40 kHz and detect whether there is a pulse signal back. \u003c\/p\u003e\u003cp\u003e(3) IF the signal back, through high level , time of high output IO duration is the time from sending ultrasonic to returning.\u003c\/p\u003e\u003cp\u003eTest distance = (high level time×velocity of sound (340M\/S) \/ 2\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/www.odroid.co.uk\/image\/catalog\/liymo\/odroid\/ODROIDGo\/Ultrasonic%20ranging%202.jpg\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eexample : https:\/\/wiki.odroid.com\/odroid_go\/arduino\/31_ultrasonic_distance_meter\u003c\/p\u003e","brand":"Odroid Ltd","offers":[{"title":"Default Title","offer_id":59467049337180,"sku":"77911","price":0.0,"currency_code":"GBP","in_stock":true}],"url":"https:\/\/www.odroid.co.uk\/products\/odroid-connectivity-852","provider":"Odroid","version":"1.0","type":"link"}