Hi, I am Jinnox, and I work as a Bolt Manufacturer in India. I'm trying to interface an HC-SR04 ultrasonic sensor with my Arduino Uno to measure distance, but I keep getting inaccurate readings. The distance values fluctuate even when the object is stationary. I've connected the VCC and GND pins correctly, and I'm using the Echo and Trig pins as per the tutorials. What could be causing these fluctuations, and how can I fix it?"
cool, same name as manufacture.
your target must be hard, good mirroring sound. human body, hair and clothes are not so good.
Hi, @jinnoxbolt
Welcome to the forum.
Can you please post your code, using code tags?
Can you post some images of your project?
So we can see your component layout.
Especially the sensor pointed at the target.
What range are you measuring in distance?
Thanks.. Tom.. 
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