Port Splitter for Digital Sensors
SPLIT-Nx-v2 splits a single NXT Sensor port into 3
ports and allows you to connect multiple I2C compliant
devices to single NXT port.
Electrical Connections
Connect SPLIT-Nx-v2 to any sensor port of NXT using standard connector
cable from NXT set (or a Flexi-cable from mindsensors.com), and connect
your digital sensors to SPLIT-Nx-v2’s any of remaining ports.
Sensor Configuration
The sensors attached to SPLIT-Nx-v2 must be I2C compliant devices with
unique I2C addresses. Attach your sensors to any of the available ports on
SPLIT-Nx-v2.
Refer to your sensor’s User Guide on how to change the I2C address.
Programming Techniques
There is no special NXT-G block or API needed to use SPLIT-Nx-v2. In your
program, address your sensors using I2C address of your sensor. (Each
sensor must have unique I2C address).
Attach the port splitter to NXT on any port (say port 1).
In your program, use the respective sensor's Block (or API as the case may
be), and for the parameters, use the port of the port splitter (port 1 in our
case) and I2C address of the attached sensor from which you wish to take a
reading.
NOTE
If you are programming in NXT-G, the respective block for the sensor
should support addressing them with I2C address.
Current Consumption of your sensors
Under normal conditions, maximum current consumption capacity of NXT I2C
bus is about 100 milli-amps. While attaching multiple sensors, ensure that
total current drawn by your sensors is within the limits. Also to limit current
consumption, use the shortest possible length of cables between the sensor
and SPLIT-Nx-v2.
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SPLIT-Nx-v2
User Guide
