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Our 2nd generation tilt compensated compass, now better than ever with higher accuracy and lower price.

Full Technical Data, and the Compass FAQ


100% compatible with CMPS09 and works with all CMPS09 Examples.





Voltage - 3.3v-5v only required
Current - 25mA Typ.
Resolution - 0.1 Degree
Accuracy - Horizontal, typically 0.5%
Accuracy - Tilted to +/- 60 degrees, typically 1%
Output 1 - I2C Interface, SMBUS compatible, 0-255 and 0-3599 , 100khz
Output 2 - Serial port, 9600 baud, no parity, 2 stop bits and 3.3v-5v signal levels
Output 3 - Timing Pulse 1mS to 37mS in 0.1mS increments
Small Size - 24mm x 18mm

Full USB-ISS Documentation

The USB-ISS module is an enhanced version of our low cost USB-I2c module. The USB-ISS is able to connect to I2C, SPI and Serial buses as well as Digital I/O and Analog inputs.

	USB-I2C		USB-ISS
USB Powered
Support I2C at 100khz
Support I2C at 20khz-1000khz				Yes, 20,50,100,400 &1000khz
I2C + I/O
SPI Mode				24khz to 3Mhz
Serial Mode				300baud to 3Mbaud
I2C Direct				Used to build custom I2C sequences
Bootloader				Built in Bootloader alowing easy user updates
Supply power to external Circuit				Up to 80mA for USB-ISS
5v operation
3.3v operation
Mounting holes on PCB

Lowest cost ultrasonic ranger with both I2C and Serial interfaces. New AutoTune algorithms intelligently back the minimum range right up to the transducer ringdown for the very best performance possible, automatically, in the background, and with no calibration cycles necessary. Additional new commands allow for separate burst and ranging control.

SRF02
Range - 16cm to 6m.
Power - 5v, 4mA Typ.
Frequency - 40KHz.
Size - 24mm x 20mm x 17mm height.
Analogue Gain - Automatic 64 step gain control
Connection Modes
1 - Standard I2C Bus.
2 - Serial Bus - connects up to 16 devices to any uP or UART serial port
Full Automatic Tuning - No calibration, just power up and go
Timing - Fully timed echo, freeing host controller of task.
Units - Range reported in uS, cm or inches.
Light Weight - 4.6gm

SRF05
Range - 1cm to 4m.
Power - 5v, 4mA Typ.
Frequency - 40KHz.
Size - 43mm x 20mm x 17mm height.

Two operational modes are available, Single pin for trig/echo or 2 Pin SRF04 compatible.

The input Trigger is a 10uS Min. TTL level pulse
Echo Pulse is Positive TTL level signal, with the width proportional to the object range.
Full Technical Documentation

Detects a candle flame at a range 2 metres (6ft) and is unaffected by ambient light!
Detect Human Body heat!
Servo control for image construction!



8 Pixel Thermal Array Sensor

Voltage - 5v only required
Current - 5mA Typ. excluding servo
Temperature Range - 4°C - 100°C
Accuracy (Full FOV) - +/-2°C +/-2% from 10°C to 100°C,
Accuracy (Full FOV) - +/-3°C from 4°C to 10°C
Field of View - 41° x 6° (8 pixels of approx. 5° x 6°)
Outputs - 1 ambient + 8 pixel temperatures
Communication - I2C Interface
Servo - Controls servo in 32 steps to 180° rotation
Small Size - 31mm x 18mm
Full Technical Data

SRF04
Range - 3cm to 3m
Power - 5v, 30mA Typ.
Frequency - 40KHz.
Size - 43mm x 20mm x 17mm height.

The input Trigger is a 10uS Min. TTL level pulse
Echo Pulse is Positive TTL level signal, with the width proportional to the object range.
Technical Documentation

Full Technical Data, and the FAQ,
a little History and some Example programs.




Voltage - 5v only required
Current - 15mA Typ. 3mA Standby.
Frequency - 40KHz
Range - 3cm - 6m.
Max Analogue Gain - Variable 94 to 1025 in 32 steps.
Connection - Standard I2C Bus.
Light Sensor - Front Facing light sensor.
Timing - Fully timed echo, freeing host controller of task.
Echo - Multiple echo - keeps looking after first echo.
Units - Range reported in uS, cm or inches.
Small Size - 43mm x 20mm x 17mm height.

SRF06
Range - 2cm to 4m.
Power - 4-20mA current Loop.
Frequency - 40KHz.
Size - 43mm x 20mm.

Full Technical Documentation

Universal Pan Tilt Bracket for all Sonar and Infrared Rangers. Kit includes two brackets with slightly different drill patterns, a servo mounting bracket and fixing hardware.


Servo's are not included in the kit and should be ordered separately. Our miniature servo below is ideal for the Tilt. Either the standard or miniature servo can be used for Pan.

Assembly Instructions

Photo shows size of the SRF10 compared with the SRF04

Full Technical Data, and the sonar 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, cm or inches.
Small Size - 32mm x 15mm x 10mm height.