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SRF01 Ultrasonic Rangefinder Sensor

SKU: SEN0004

The SRF01 Ultrasonic Rangefinder Sensor is a compact, single-transducer device that uses a TTL UART serial interface, compatible with controllers such as Basic Stamps and PICAXE. It offers a default baud rate of 9600, adjustable to 19200 or 38400, and allows up to 16 units to be connected on a single bus. The sensor measures distances ranging from 0 to 600 cm, providing readings in both centimeters and inches. Its standard and advanced modes, along with support for address changes, make it ideal for a variety of applications.

Overhead shot of SRF01 ultrasonic distance sensor black plastic cover with circular pattern-DFRobot product sku:SEN0004 image.
  • Docs
  • Tech Specs
    • 1. Example Code for Arduino-Range Measurement

    Arduino example for SRF01 and LCD03. Takes a range in CM and displayes it on the LCD03 screen. Both the SRF01 and the LCD0 use their own software serial port.
    Reference

    Specification

    The SRF01 accepts any voltage between 3.3v and 12v, however the recommended maximum is 5.5v. Internally, it operates at 3.3v and there is a low dropout regulator already on the SRF01 to provide this. The serial I/O pin operates at 3.3v and also 5v tolerant, so you can connect it directly to 3.3v or 5v signals.

    Operating Mode Current
    During ranging 25mA
    Standby (waiting for a command) 11mA
    Sleep mode (shutdown) Around 55uA

    FAQ

    • Does anyone got it working with an Arduino UNO board? It is not working.. and my console just showed "SRF01 Example". The code hangs at line 30...

      Please exchange the GND and Vcc connection. They were wired reversely.

      FAQ
    • Does anyone got it working with an Arduino UNO board? The code hangs at line 30 and console shows "SRF01 Example".
      Please exchange the GND and Vcc connection. They were wired reversely.

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