SRF10 – Ultra small I2C range finder

Description

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1 Unit SRF10 Ultrasonic Sensor

Power – 5v at only 15mA, this reduces to 3mA in standby condition

Communication – Standard I2C Bus.

Distance – Using a 40khz ping the SRF10 measures from 3cm upto 6m. The result can be scaled by the SRF10 to uS, cm or inches.

Fully calculated result – No need to worry about timing a response pulse or scaling the result.

Ultra small size – The SRF10 measures just 32mm x 15mm x 10mm.

Full Technical Data and the FAQ

Voltage – 5v only required

Current – 15mA Typ. 3mA Standby.

Frequency – 40KHz

Range – 6cm – 6m.

Max Analogue Gain – Variable 40 to 700 in 16 steps.

Connection – Standard I2C Bus.

Timing – Fully timed echo, freeing host controller of task.

Units – Range reported in uS, mm or inches.

Small Size – 32mm x 15mm x 10mm height.

This small sonar ranger from Devantech offers an amazing wide range from 3cm to 6m. The SRF10 is interfaced using the IIC bus.

Communication with the SRF10 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. To the programmer the SRF10 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 SRF10 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.

Examples:

I2C bus tutor – general I2C guide

Arduino – using an I2C interface and LCD03/LCD05

ATMEGA32 – reading the result and displaying on a LCD03/LCD05

BS2 stamp – I2C communication, writes to the debug console

PIC18F4410 – reading the result and displaying on a LCD03/LCD05

PIC24FJ16GA002 – reading the result and displaying on a LCD03/LCD05

Picaxe18x – I2C communication exampe

PicBasic PRO –  uses the PIC16F877

Raspberry Pi – using I2C communication