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Ultrasonic Sensor HC-SR04 Distance Measuring Module - Blue + Silver

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Ultrasonic Sensor HC-SR04 Distance Measuring Module - Blue + Silver

Features:

.Brand new Ultrasonic Sensor HC-SR04 Distance Measuring Module

.Features 4-mode connections: VCC / trig (T) / echo(R) / GND

.With electric frequency output signal from 0V to 5V

.Has high precision up to 3mm

.5VDC power supply

.Detecting distance is from 2cm to 450cm

.Module Working Principle:

Adopt IO trigger through supplying at least 10us sequence of high level signal; The module automatically send eight 40khz square wave and automatically detect whether receive the returning pulse signal; If there is signal returning, through outputting high level and the time of high level continuing is the time of that from the ultrasonic transmitting to receiving

Specifications:

.Color: Blue + Silver
.Model: HC-SR04

.Static Current: Less than 2mA

.Sensor Angle: Not more than 15 degrees

.Output Signal: Electric frequency signal, high level 5V, low level 0V

.Mode of Connection: VCC / Trig (T) / Echo(R) / GND

.Package Dimensions: 90.0*67.0*17.0mm

.Weight: 12.0g

Package Included:

.1 × Ultrasonic Sensor HC-SR04 Distance Measuring Module - Blue + Silver

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Build quality is acceptable - works nicely - measurements are repeatable. Trig pin has pull-up resistor to 5V, and Echo pin is push-pull, so i recommend using level conversion when interfacing to e.g 3.3V FPGA (Sensor did not work well with 3.3 supply voltage)
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