HС-SR04

This is an Arduino library for HC-SR04, HC-SRF05, DYP-ME007, BLJ-ME007Y, SEN136B5B, US-100 (PWM output mode), JSN-SR04T (PWM output mode) ultrasonic ranging sensor

• Operating voltage: 5v
• Operating current: 10..20mA
• Default range: 4cm..250cm
• Measuring angle: 15°
• Operating frequency: 40kHz
• Resolution: 0.3cm
• Maximum polling rate: 20Hz

Features:

• Read distance from 4cm to 250mm**
• Compensate speed of sound according to the ambient temperature
• Pass distance thought median filter
• Set maximum distance to speed up measurement

Tested on:

• Arduino AVR
• Arduino ESP8266
• Arduino STM32

**Library returns 38000 if OUT OF RANGE