Ultrasonic Movement Detector

A 40KHz crystal locked circuit will reliably detect Movement 4m to 7m away. Use 9V to 12V. Ideal for monitoring door opening or Movement pass a point. Full circuit description. LED indicates Movement. Signal out provided so you can add you own circuit or relay (e.g. Alarm). You can use the MIT Handyboard system or other board to monitor this signal output. Assembly instructions and schematic provided.

Ultrasonic Range Finder MaxSonar

LV-MaxSonar high performance ultrasonic rangefinders to be the easiest to use ultrasonic rangefinders available. The LV-MaxSonar sensor line offers very short to long-range detection and ranging, in an incredibly small package with ultra low power consumption.

Range show on 1 ft grid to 4 ft dowels. (Beam plots are approximate)

• Very low price .
• The lowest power 2.5V to 5.5V operation
• Low noise chaining
• Superior beam shape
• Stable range reading
• No central blind spot
• The smallest PCB
• Has mounting holes
• Detect objects 0-in. to 254-in. (6.45-meters)
• Range objects 6-in. to 254-in. (6.45 meters)
• Reports range directly Serial (0-Vcc) Out , Analog Voltage Out , or Pulse Width Out
• 42KHz ultrasonic
• Lowest power -- 2ma
• Free run operation or Triggered operation
• MaxSonar-EZ0 datasheet
• MaxSonar-EZ1 datasheet
• MaxSonar-EZ2 datasheet
• MaxSonar-EZ3 datasheet
• MaxSonar-EZ4 datasheet
  

SENSOR-SRF01 - Ultrasonic Range Finder

The SRF01 is a single transducer ranger with a one-wire serial interface. Up close sensing range can work reliably all the way up to the transducer. Sensing range is from 0cm out to 600cm. Also included is a polarized connector with wiring and a mounting grommet. Here is the datasheet

Specifications

Voltage Input 3.3V to 12.0V
Operating Current 25mA (during ranging)
Max Range 6 meters
Min Range 0 centimeters

SENSOR-SRF02 - Ultrasonic Range Finder

The SRF02 features both I2C and a Serial interfaces. The serial interface is a standard TTL level UART format at 9600 baud,1 start, 2 stop and no parity bits, and may be connected directly to the serial ports on any microcontroller. Up to 16 SRF02's may be connected together on a single bus, either I2C or Serial. New commands in the SRF02 include the ability to send an ultrasonic burst on its own without a reception cycle, and the ability to perform a reception cycle without the preceding burst. Because the SRF02 uses a single transducer for both transmission and reception, the minimum range is higher than our other dual transducer rangers. The minimum measurement range is around 15cm (6 inches). The SRF02 can measure in microseconds, cm or inches. Here is the datasheet.

Specifications
Voltage 5v
Current 4mA Typ.
Frequency 40KHz
Maximum Range 6 m
Minimum Range 15 cm
Max Analogue Gain Automatic 64 step gain control
Connection Standard IIC Bus, UART Serial
Full Automatic Tuning No calibration, just power up and go
Timing Fully timed echo, freeing host computer of task
Units Range reported n uS, mm or inches
Weight 0.16226 oz.
Size 24mm w x 20mm d x 17mm h

SENSOR-SRF04 - Ultrasonic Range Finder

This is a low range sonar for object detection. Here is the timing specification and datasheet .

Voltage - 5v only required
Current - 30mA Typ. 50mA Max.
Frequency - 40KHz
Max Range - 3 m
Min Range - 3 cm
Sensitivity - Detect 3cm diameter broom handle at > 2 m
Input Trigger - 10uS Min. TTL level pulse
Echo Pulse - Positive TTL level signal, width proportional to range.
Small Size - 43mm x 20mm x 17mm height

Datasheet and interface examples included with the package.

SENSOR-SRF05 - Low Cost Ultrasonic Range Finder

Here is the datasheet

Voltage - 5V only required
Low Current - 4mA Typ.
Frequency - 40KHz
Max Range - 4 m
Min Range - 1 cm
Modes - Single pin for trig/echo or 2 Pin SRF04 compatible.
Input Trigger - 10uS Min. TTL level pulse
Echo Pulse - Positive TTL level signal, width proportional to range.
Small Size - 43mm x 20mm x 17mm height

SENSOR-SRF06 - 4-20mA Current Loop Ultrasonic Range Finder

The SRF06 is a low cost ultrasonic ranger with a 4-20mA current output. Power can be provided from a 9V to 24V source. Measurement output can be converted to voltage with the addition of a resistor to ground. The SRF06 is powered from the 4-20mA current loop and requires no other power. The SRF06 automatically performs continuous ranging every 70-100msec.

Range - 2cm to 4m.
Power - 4-20mA current Loop.
Frequency - 40KHz.
Size - 43mm x 20mm.

SENSOR-SRF08 - Ultrasonic Range Finder

This is a compact and high performance sonar for object detection.

SRF08 Specification
Voltage - 5v only required
Current - 15mA Typ. 3mA Standby.
Frequency - 40KHz
Range - 3cm -6m .
Max Analogue Gain - Variable 94 to 1025 in 32 steps.
Connection - Standard I 2C Bus.
Light Sensor - Front Facing light sensor.
Timing - Fully timed echo, freeing host controller of task.
Echo - Multiple echo - keeps looking after first echo.
Units - Range reported in uS, mm or inches.
Small Size - 43mm x 20mm x 17mm height.

Datasheet and interface examples included with the package

SENSOR-SRF10 - Ultrasonic Range Finder

This small sonar ranger offers an amazing wide range from 3cm to 6m . The SRF10 is interfaced using the IIC bus. Here is the datasheet .

Voltage 5v
Current 15mA Typ. 3mA Standby
Frequency 40KHz
Maximum Range 6 m
Minimum Range 3 cm
Max Analogue Gain Variable 40 to 700 in 16 steps
Connection Standard IIC Bus
Timing Fully timed echo, freeing host computer of task
Units Range reported n uS, mm or inches
Size 32mm w x 15mm d x 10mm

SENSOR-SRF235 - "Pencil Beam" Ultrasonic Range Finder

This sensor uses a 235KHz transducer with a 15 degree beamwidth to measure distances from 10cm to 120cm . Compared to the SRF 04/08/10 sensors, its beam is much narrower. It can also cycle more quickly, taking up to 100 measurements per second. The 235KHz ultrasonic signal of the SRF235 behaves differently than the 40KHz ultrasonic signal of the SRF 04/08/10 sensors. Here is the datasheet .

SRF235 Specification
Voltage: 5v only required
Current: 25mA Typ.
Frequency: 235KHz
Range: 10cm -1.2m .
Connection: Standard I 2C Bus.
Timing: Fully timed echo, freeing host controller of task.
Units Range : reported in uS, mm or inches.
Small Size : 34mm x 20mm x 19mm height.

SENSOR-SRF485 - RS485 Interface Ultrasonic Range Finder

The SRF485 is a single transducer ultrasonic ranger that uses a standard RS485 interface. The sensor has a built in voltage regulation system allowing input power between 8 to 24 VDC. The sensing range is from 30cm to 5 meters. The SRF485 is based on the SRF02 design with a RS485 serial interface. The multiple sensors (maximum of 127) can exist on a RS485 network once the device address is changed for each ranger. Every SRF485 is programmed at the factory with a unique 24 bit address. The address is written on the PCB of the sensor. It can be connected to a PC using our USB-RS485 module . Here is the dimension and technical datasheet .

Specifications
Voltage Input 8.0V to 24.0V
Operating Current 10mA
Max Range 5 meters
Min Range 30 centimeters
Temperature Compensation -30 to 50 C
RS485 Communication 38400 baud, 1 start, 2 stop, no parity

SRF485WPR - Sonar with Weatherproof Transducer & Temperature Compensation

The SRF485WPR is a single transducer ultrasonic ranger that uses a standard RS485 interface with a water resistant transducer. The sensor has a built in voltage regulation system allowing input power between 8 to 14 VDC. The sensing range is from 60cm to 5 meters. The SRF485WPR is based on the SRF02 design with a RS485 serial interface with a water resistant transducer.

Sensor cannot be used under water.

Multiple sensors (maximum of 127) can exist on a RS485 network once the device address is changed for each ranger. Every SRF485 is programmed at the factory with a unique 24 bit address. The address is written on the PCB of the sensor.

Voltage - 8v to 14v, 12v nominal.
Current - 10mA
Frequency - 40KHz
Range - 60cm to 500cm
Connection - Standard RS485 Bus. Up to 127 SRF485WPR's connected to your controller.
Units - Range reported in uS, cm or inches.
Temperature Compensation -30 to +50 centigrade