HC-SR04+ Ultrasonic Distance Sensor (3.3 V and 5 V Compatible)

Description and specifications:

• Working voltages: 3-5.5V (DC);
• Maximum angle 15 degrees;
• Detection radius:
  • Powered at 5V: 2cm-450cm;
  • Powered at 3.3V: 2cm-400cm;
• Maximum accuracy 0.3cm;
• Input trigger: TTL pulse, 10u;
• Output signal: TTL PWL;
• The state-of-the-art operational amplifier, SGM324, enables both voltage levels (3.3-5V) and lower current consumption, 3mA;
• The software and hardware are compatible with HC-SR04 - it can be replaced directly in your project.

The sensor is very easy to use, with only 4 pins: VCC and GND, which are used for power and two digital pins, used for the trigger and the echo.

Operating principle: This module outputs 40kHz at 40kHz and measures the return time, outputs a signal with the amplitude to which it is powered. By measuring the time of the high signal, the distance is determined.

The calculation formula is: Distance = (high-time x sound speed (340m / s)) / 2.

Caution: When using, first connect the table to avoid sensor malfunction.

Dimensions: 45.4 x 26.2 x 18mm.