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Full USB-I2C Documentation

The USB-I2C module is a low cost USB to I2C module, with a simple command set, and interfacing to any I2C device.

The USB-I2C module provides a complete interface between your PC and the I2C bus. The module is self powered from the USB cable and can supply up to 70mA at 5v for external circuitry from a standard 100mA USB port.

I2C Devices - Any registered or unregistered I2C device.
Host support - Drivers available for Windows XP64, XP, 2000, ME, 98, CE.NET V4.2, Linux, Mac OS8, OS9, OSX.
Voltage - Self powered - 5v available
Current - Up to 70mA available for your own circuits
On-board Pull-up resistors - 4.7k
Digital I/O - 1 Input and 2 I/O available when not using I2C.
Analogue Input - 2 10-bit channels available when not using I2C.

Add a Compass Sense to your Robot!

Full Technical Data, and the Compass FAQ

Many examples available for popular controllers.


Voltage - 5v only required
Current - 25mA Typ.
Resolution - 0.1 Degree
Accuracy - 3-4 degrees approx. after calibration
Output 1 - Timing Pulse 1mS to 37mS in 0.1mS increments
Output 2 - I2C Interface, SMBUS compatible, 0-255 and 0-3599 , SCL speed up to 1MHz
Small Size - 32mm x 35mm
Low Cost - Best Price Compass Module Available

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, mm 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

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, mm or inches.
Small Size - 43mm x 20mm x 17mm height.

Full LCD03 Documentation

Display - 20 characters per row, 4 rows
Voltage - 5v only required
Current - 280mA typ. with backlight on
Modes - I2C or 9600 baud Serial
Keypad - Automatic scanning of a 3x4 matrix keypad
Custom characters - up to 8 custom characters easily defined

Backlight defaults off, and can be turned on under software control