Arduino 101 with Ultrasonic Sensor HC SR04

Official Hardware Retired 101
1

Hello,

I'm trying to use the sensor HC SR04 that operates at 5 V with my Arduino 101 (in which the operating voltage is 3.3 V) and i have problems because the operating range of the sensor is not good as well as the stability of the measure: someone has faced and resolved this problem?

Thank you,

Pierluca

2

Try using a level shifter. Here is one that should work: https://www.sparkfun.com/products/12009