Ultrasonic range finders emit beeps of inaudible ultrasonic sound and then wait for echoes to come back. The time taken for an echo is used to calculate the distance to the object.
Many different varieties of ultrasonic sensors are available. They vary by the communication protocols (Serial, USB, I2C, RS232), response time, accuracy, beam width and operating environment.
Best suited to detecting harder objects as the sound is reflected back well. Unaffected by infrared light from the sun these ultrasonic sensors are better suited to use in bright light.
Most of our sensors are more suitable to indoor or protected outdoor use although we do stock some waterproof sensors for tough conditions.
Beam width is used to describe the way the sound wave will spread out from the sensor so that the echo can be returned from objects within an approximate cone shape extending out the front of the sensor.
Code: SEN-10038
The SRF01 is a tiny single transducer ultrasonic rangefinder in a very small footprint PCB with a range of 0-600cm. Connection is to a single pin TTL serial interface and up to 16 SRF01's may be connected together on a single bus. More Details...
In stock in Australia
Shipping from $9.90
Code: MEC-30001
Easily mount a SRF10 ultrasonic sensor on a servo for panning or to a robot base. More Details...
In stock in Australia
Shipping from $9.90
+lots more from our supplier in 7 days
Code: SEN-10006
The Devantech SRF02 low cost ultrasonic sensor supports both I2C and serial interfaces. No calibration is required with the new AutoTune algorithms which back the minimum range right up to the transducer ringdown automatically, with a full range of 15cm- 6m. Seperate burst and ranging control is ... More Details...
Special Order
Shipping from $9.90
+lots more from our supplier in 7 days
Code: SEN-10007
The SRF05 is realises big advances in design over the previously successful SRF04 with increased flexibility, greater range ( 3cm-4m) and lower cost. It can use a single pin for trigger and echo and includes an echo pulse delay to accommodate slower controllers such as Basic Stamp and Picaxe. More Details...
Special Order
Shipping from $9.90
+lots more from our supplier in 7 days
Code: SEN-10008
The SRF08 is an advanced ultrasonic range finder that connects over a I2C interface and has a range of 3cm to 6m. Low power consumption, fully timed multiple echos and a bonus built in light sensor. More Details...
Special Order
Shipping from $9.90
+lots more from our supplier in 7 days
Code: SEN-10009
The SRF10 is a the smallest dual transducer ultrasonic ranger. It has a range of 6cm to 6m and you can connect up to 16 sensors over a I2C interface. Low power consumption, fully timed echo, variable analog gain and a range of 6cm to 6m. More Details...
Special Order
Shipping from $9.90
+lots more from our supplier in 7 days
Brands