DFRobot
URM37 Ultrasonic Sensor for Arduino / Raspberry Pi
URM37 V4.0 Arduino Ultrasonic Sensor comes with temperature compensation which provides better distance measurement accuracy. It is very unique feature i...
URM37 V4.0 Arduino Ultrasonic Sensor comes with temperature compensation which provides better distance measurement accuracy. It is very unique feature in the industry. URM37 V4.0 Arduino Ultrasonic Sensor offers output modes: analog output, switch, serial (TTL and RS232 level optional) and PWM. With analog mode, the sensor outputs voltage which is proportional with distance, it can be connected to Arduino, Raspberry Pi and LattePanda(windows 10 development board).
With switch mode, the Ultrasonic sensor will output an on/off signal when object is detected within certain distance (user-defined). With serial mode, the actual distance value (cm) is calculated and output via TTL/RS232. With PWM mode, the sensor ouptput PWM signal from raw date.
URM37 V4.0 Ultrasonic sensor, the current version has better intelligence capabilities, meanwhile, mechanical dimensions and pin interface and communication commands are compatible with V3.2, V3.2 has been reversed based on the following changes:
- Serial level selected from the skipped stitches to button, user can easily select RS232 or TTL-level output level output by pressing the settings(after reboot)
- Modified the algorithm, so dead zone was reduced and enhance accuracy
- Analog voltage output, voltage and the measured distance is proportional
- Wide voltage support +3.3V-5.0V
- Power reverse protection
- Automatic measurement of time interval can be modified
- Modify a servo controlled angle of 0-180, compatible with most of servos on the market
- Refresh rate is now set to 10hz.
SPECIFICATIONS
- Power: +3.3V~+5.0V
- Current: <20mA
- Working temperature: -10 ~ +70 C
- Detecting range: 5cm-500cm (2-196 in)
- Resolution: 1cm (o.39 in)
- Interface: RS232 (TTL),PWM, Switch, Analog
- Size: 22mm (0.87 in)x 51 mm (2 in)
- Weight: 25g
OPTIONAL PARTS
DOCUMENTS
- Wiki (URM37 V4.0 Ultrasonic Sensor (SKU:SEN0001))
- Dimension Diagram
- Software "HelpMate"
- Arduino Library Tutorial
SHIPPING LIST
- URM37 Ultrasonic Sensor x1
PROJECTS
Jargon buster
Plain-language definitions for the technical terms used above.
- PWM
- Pulse Width Modulation is a way for a digital pin to simulate variable output power by switching on and off very quickly. It matters for controlling things like LED brightness, motor speed, or servo-style signals from a microcontroller pin.
- servo
- A servo is a motor with built-in position control, usually told to move to a specific angle by a control signal. It matters when you need repeatable movement, such as steering, arms, flaps, or linkages, rather than continuous spinning.
- Temperature compensation
- Temperature compensation means the sensor adjusts its readings to reduce errors caused by changes in water temperature. This matters for field monitoring because ponds, rivers, and tanks can vary in temperature throughout the day and across seasons.
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Supplier page — dfrobot.com
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