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Topic: HC-SR04 gives max range of ~60 cm (Read 2 times) previous topic - next topic

barbado

Hi, Rasmus.

I just had the same issue here. Fortunatelly I had the same code and HC-SR04 sensor working on a Arduino Uno board.

After some tests I found out the problem is the Arduino Nano built it power supply does not have enough power to sustain the HC-SR04 sensor when connected to an USB port.

It was at only 4.6V and this was causing the distance measure error.

I powered the Arduino Nano board with a 9v external battery (pin 30) and it started to work perfectly!

I hope this helps you out.

Barbado.

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