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Using the LEGO® NXT Intelligent Brick

Connecting the NXT Components


Figure 1

Figure 1 shows the connections described in this section. The red numbers correspond with the steps below.

1. Connect the NXT Intelligent Brick to the bottom connection on the HiTechnic DC Motor Controller.

2. From the top connection of the HiTechnic DC Motor Controller, connect it to the HiTechnic Servo Controller’s bottom connection.

3. One or two DC Motors can be connected to the HiTechnic DC Motor Controller where it is labeled Motor 1-, 1+, 2-, and 2+. The black wire from a motor goes into the negative position, and the red wire goes into the positive position. After inserting each wire, tighten the screw on top of the control box to hold the wire in place. Loosen the screw first if you need to remove the wire.

4. Using a red and black wire from the set, connect the HiTechnic DC Motor Controller to the HiTechnic Servo Controller. To do this, insert an end of the red wire into the motor control box where it is labeled Battery+ and tighten the screw. Insert an end of the black wire into the motor control box where it is labeled Battery- and tighten the screw.

Now, insert the other end of the red wire into the servo control box where it is labeled Battery+ and tighten the screw. Insert the other end of the black wire into the servo control box where it is labeled Battery- and tighten the screw.

5. Insert the wires of any servos you need to connect into the HiTechnic Servo Controller in any of the six positions labeled starting with Chan. These wires have plastic ends that insert into slots on the control box.

6. Connect the battery pack into the battery pack connection. Take the connection’s red wire and plug it into the on/off switch.

7. Insert the black wire from the battery pack connection into the HiTechnic Servo Controller where it is labeled Battery-. Tighten the screw.

8. Insert the red wire from the on/off switch into the HiTechnic Servo Controller where it is labeled Battery+. Tighten the screw.

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