HC-SR04 ultrasonic distance sensor at an angle
so, i'm using hc-sr04 ultrasonic distance sensor project, , i've run peculiar problem. when face sensor straight ahead, works wonderfully, , has range of 3 meters. works when faced straight or straight down. however, once put @ angle greater or equal 30 degrees, begins giving bad readings , has range of 50 cm (when faced @ thirty degree angle, should reading little more 100 cm, instead reading 270). has else run problem before? if so, have found solution? in advance.
post photo of drawing showing dimensions of 2 test scenarios. show walls or flat surfaces within 300 mm of sensor in direction facing. give shape , dimension of test object or target used test.
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