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HRLV-MaxSonar-EZ4 (MB1043)
The HRLV-MaxSonar-EZ4 (MB1043) is a compact ultrasonic range sensor with 1 mm resolution, measuring distances from 300 mm to 5000 mm at a 10 Hz read rate. It...
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The HRLV-MaxSonar-EZ4 (MB1043) is a compact ultrasonic range sensor with 1 mm resolution, measuring distances from 300 mm to 5000 mm at a 10 Hz read rate. It features the narrowest beam width in the HRLV-MaxSonar-EZ sensor line, making it ideal for detecting larger objects while ignoring smaller ones.
The sensor provides virtually noise-free readings through high-output acoustic power, continuously variable gain, real-time automatic calibration, waveform signature analysis, and noise rejection algorithms. Multiple output formats are available: analogue voltage, serial (RS232 or TTL), and pulse width.
Key Features
- 1 mm Resolution – High-precision millimetre-level distance measurement
- 300–5000 mm Range – Objects closer than 300 mm typically read as 300 mm
- Narrowest Beam – Most focused beam in the HRLV-MaxSonar-EZ line, best for large object detection
- Multiple Outputs – Analogue voltage, RS232 or TTL serial, and pulse width
- Real-Time Auto Calibration – Compensates for voltage, humidity, and ambient noise
- Firmware Noise Filtering – Enhanced clutter rejection and noise tolerance
- Internal Temperature Compensation – With optional external sensor (HRMaxTemp)
- Compact Module – Less than one cubic inch with mounting holes
Specifications
- Sensor Frequency – 42 kHz ultrasonic
- Range – 300–5000 mm
- Resolution – 1 mm
- Read Rate – 10 Hz
- Supply Voltage – 2.5–5.5V
- Current Draw – 3.1 mA average
- Operating Temperature – 0°C to +65°C
- Compliance – RoHS
Ideal For
- Large object detection and proximity sensing
- Precision distance measurement
- Robotics and autonomous navigation
- Level sensing and fill monitoring
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- Temperature compensation
- Temperature compensation is when a sensor or instrument adjusts its readings to reduce errors caused by changes in temperature. This matters because a sensor's raw output often drifts as conditions warm or cool, so compensation keeps readings more consistent and accurate over time.
- Tolerance
- Tolerance tells you how far the real resistance value may be from the printed value. A 1% resistor is useful when a circuit needs more predictable behaviour than a looser 5% or 10% part.
- TTL serial
- A simple serial data connection that uses microcontroller logic-level voltages (typically 3.3 V or 5 V) rather than the higher, inverted voltages of computer RS-232. When a device lists TTL serial, it can usually wire straight to a microcontroller's UART pins or to a USB-to-TTL serial adapter, but it needs a level converter before connecting to a true RS-232 port.
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Brands
Supplier page — dfrobot.com
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