Established in 1995, Guanghi Optical Instrument Co., Ltd. is a joint stock China ultrasonic range finder manufactuer and designer engaged in the manufacturing and marketing of a wide variety of Optical Instrument and products. Our products are widely applied in the education of students, research in lab, entertainment and science explore. During more than one decade's development, our products have awarded the CE certificate. We also have our own quality control system and customer' service system. So we can accept the order against customers' samples, specifying designs, specifications, and packaging requirements. We also prepared to accept the OEM and custom ultrasonic rangefinder with customer's own trade marks or brand names.

The Devantech Ultrasonic Range Finder SRF08 identifies obstacles, 3cm to 6m, and can easily be connected to microcontrollers such as the BasicX or BasicATOM. This ultra-sonic ranger will soon become essential for your robotic applications. Indeed, with this sensor, it is possible to know the exact distance of an obstacle in the sonar field of view. The cleverness of your robot will use a sensitive sensor similar to the one bats use to know their position. With an advanced programming, you can design compensators in order to perfectly control your motors according to the obstacle's distance. Input Trigger - positive TTL pulse, 2 uS min, 5 uS typ. Echo Pulse - positive TTL pulse, 115 uS to 18.5 mS. Echo Hold-off - 350 uS from fall of Trigger pulse. Burst Frequency - 40 kHz for 200 uS. The results must be read individually from each sonar's real address. We have examples of using the SRF08 module with a wide range of popular controllers. 20 mA power consumption. Narrow acceptance angle. Simple pulse in / pulse out communication. Indicator LED shows measurement in progress.

Communication with the SRF08 ultrasonic rangefinder is via the I2C bus. This is available on popular controllers such as the OOPic and Stamp BS2p, as well as a wide variety of micro-controllers. HC11 MC programming examples are also available! To the programmer the SRF08 behaves in the same way as the ubiquitous 24xx series eeprom's, except that the I2C address is different. The default shipped address of the SRF08 is 0xE0. It can be changed by the user to any of 16 addresses E0, E2, E4, E6, E8, EA, EC, EE, F0, F2, F4, F6, F8, FA, FC or FE, therefore up to 16 sonar's can be used. In addition to the above addresses, all sonar's on the I2C bus will respond to address 0 - the General Broadcast address. This means that writing a ranging command to I2C address 0 (0x00) will start all sonar's ranging at the same time. This should be useful in ANN Mode (See below). The results must be read individually from each sonar's real address. We have examples of using the SRF08 module with a wide range of popular controllers.

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