|Description||ultrasonic ranging module|
|I have paid||$0.72 / piece (free shipping)|
|Dimensions||board size: 45 x 20 mm, 4 x mounting hole M1.4|
|Library||hc-sr04.ino (test code)|
HC-SR04 vs US-015
You may find more similar models on the Internet. I have compared HC-SR04 with US-015 using the same code. Both the units were measuring fixed distance for certain amount of time. As you can see, both of them are quite accurate, however there are few bad samples.Detailed view shows that the US-015 performs better. You can get more stable output using this module.