Grove Ultrasonic Ranger Measuring Specifications


May I check on the updates with regards to Grove Ultrasonic Ranger Measuring Specifications?

Please elaborate how the Measuring Range and the default detecting distance of Ultrasonic Ranger is calculated and intended to work in detail?




This Grove - Ultrasonic ranger is a non-contact distance measurement module which works at 40KHz. When we provide a pulse trigger signal with more than 10uS through singal pin, the Grove_Ultrasonic_Ranger will issue 8 cycles of 40kHz cycle level and detect the echo. The pulse width of the echo signal is proportional to the measured distance. Here is the formula: Distance = echo signal high time * Sound speed (340M/S)/2. Grove_Ultrasonic_Ranger's trig and echo singal share 1 SIG pin.

Parameter Value/Range
Operating voltage 3.2~5.2V
Operating current 8mA
Ultrasonic frequency 40kHz
Measuring range 2-350cm
Resolution 1cm
Output PWM
Size 50mm X 25mm X 16mm
Weight 13g
Measurement angle 15 degree
Working temperature -10~60 degree C
Trigger signal 10uS TTL
Echo signal TTL


best rgds

Hi Bill,

I have already consolidated the technical specification and description of Grove Ultrasonic Ranger from its Wiki site.


I am interested to find out in detail how the placement of this sensor might affects its measurements or the intended outputs.

Please assist with the following quires probably by providing a diagram to explain:

· Is the Grove Ultrasonic Range required to be placed at its line of sight?

· For the default measuring range is it sensor calculating the vertical or horizontal distance from the placement of Ultrasonic Ranger?


Hi Niyas,

The emitting surface is a cone with an angle of 15 degrees, When it hits the objects, the beam will return to echo sensor. If the beam can enter into echi sensor, the distance can be measured. Or else, it can not. Here is the datasheet of the 2 sensors, trig and echo.

<LINK_TEXT text=“ … 6T-R-1.pdf”></LINK_TEXT>

Thanksbest rgdsBill