US-020 ultrasonic ranging module, 5V, can be measured 7M

• Outline

US-020Ultrasonic ranging module can be realized2cm ~ 7mThe non-contact distance measuring function , the supply voltage is5V, The static power consumption less than3mASupportGPIOCommunication mode , which with the watchdog , stable and reliable .

• The main technical parameters

• This module physical map and dimensions

The module shown in Figure3.1And Fig.3.2Follows:

The size of the module:45mm * 20mm * 1.6mm. Board has two radius1mmMechanical holes, as3.3Follows:

Chart3.3:US-020Dimensions

• Interface Description

This module has an interface:4 PinPower supply and communication interfaces.

4 PinInterface2.54mmPitch bend pin, as shown in4.1Follows:

Are numbered from left to right1,2,3,4. They are defined as follows:

• 1NumberPin: NextVCCPower (DC5V).
• 2NumberPin: Connect the external circuitTrigEnd to this pin inputs a10uSHigh above, can trigger module ranging.
• 3NumberPin: Connect the external circuitEchoSide, when the distance at the end of this pin outputs a high-level round-trip time of the width and ultrasound.
• 4NumberPin: Connect the external circuit ground.
• Ranging works

Modules ranging timing is shown5.1Follows:

Sequence diagram

Chart5.1Showed that: only needTrigEnter a pin10USHigh above, the system can be issued8A40KHZUltrasonic pulse, and detection of the echo signal. When detecting echo signals, throughEchoPin output.

According toEchoThe duration of high pin outputs the distance value can be calculated. Ie, the distance values are:(High Time* 340m / s) / 2.