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 signal 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 signal share 1 SIG pin.
Version¶
| Product Version | Changes | Released Date |
|---|---|---|
| Grove-Ultrasonic ranger V1.0 | Initial | Mar 2012 |
| Grove-Ultrasonic ranger V2.0 | Improve the power stability with low-voltage main board with below changes: 1. Added an capacitance C14 2. Redesigned the layout to make it more tidy 3. Compatible with 3.3V voltage system | July 2017 |
Specification¶
| 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 |
