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pitsco Tetrix Creator's Manual

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39132 V0909

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  • Page 1 39132 V0909...
  • Page 2 Roaming over a simulation of frozen tundra with the aurora borealis lighting the sky, the robot on the cover is built from one TETRIX Base Set, a DC motor controller, and an R/C unit. This robot features a double-decker design so that some of the electronics and batteries are not exposed.

  • Page 3: Table Of Contents

    Connecting the NXT to TETRIX Elements ........

  • Page 4: Materials Included

    Tools and Materials Not Included Note: The TETRIX system enables you to create your own robot design, and you can build a robot with just the base set. However, additional parts and tools can be added. Many of the optional items below are available at www.shop.

  • Page 5: Construction Tips

    Construction Tips Aligning to the holes – The patented hole pattern on the TETRIX structural pieces enables you to attach pieces together at an angle, not just horizontally and vertically from each other. For example, you can attach a piece at 45°...

  • Page 6: A - Building A Basic Chassis With Indirect Drive

    3) Place a gear hub spacer on the center hole of a wheel and line up their holes. Thread a 1-1/4" screw that comes with the hub through a small hole on the other side of the wheel (Figure A6). Figure A5 Figure A6 TETRIX by Pitsco 39132 V0909...

  • Page 7: Motors And Gears

    4) Turn the motor until the 40-tooth gear meshes with the 80-tooth gear (Figure Figure A11 A12). Tighten the clamping end of the motor mount with the 7/64" hex wrench. 5) Repeat Steps 1-4 for the other side of the chassis. Figure A12 TETRIX by Pitsco 39132 V0909...

  • Page 8: Back Wheels

    (Figure A16). Tighten the clamping end of the motor mount. 4) Attach the wheel to the hub with four 1/2" SHCSs (Figure A17). Flip over the chassis (Figure A18). 5) Repeat Steps 1-4 for the other side. TETRIX by Pitsco 39132 V0909...

  • Page 9: B - Servos And Pivots

    The plastic servo’s range of motion. horns can be disposed of or used with robotics and electronics other than TETRIX. The TETRIX servos can pivot 180°.

  • Page 10: Double-Servo Mount And Pivot

    3/8" BHCSs (Figure B7). 5) Adjust the servo’s range of mo- tion as needed (see TETRIX Tip on this page). Thread the servo horn screw through the pivot bracket and horn and secure to the servo.

  • Page 11: Pivot With Structural Elements

    2) Now, count three large holes to the other side of the center. Attach two more stand-off posts of the same height as those in Step 1. They should be in holes parallel to the first pair of posts. Figure B13 TETRIX by Pitsco 39132 V0909...
  • Page 12 Use two 5/16" SHCSs to attach the channel to the posts. Push the set collar against the bushing and tighten the screw (Figure B19). Figure B19 TETRIX by Pitsco 39132 V0909...

  • Page 13: C - Tubes

    C – Tubes Tubes can be used many ways. They make a strong TETRIX Tip: Gears and Ratios and lightweight lever arm. Tubes can be part of the structural body of the robot; for example, connect- By attaching one end of a tube to a servo and the other to ing two sides of a chassis.

  • Page 14: D - Grippers

    (Figure D5). Figure D6 Figure D5 6) Check the servo’s range and adjust it if necessary. Attach the horn to the servo with the servo horn screw (Figure D6). TETRIX by Pitsco 39132 V0909...

  • Page 15: Two-Motor Gripper

    6) Connect the two servos with the Y connector. Attach the Y connector to the remote control system and power it up. This will synchronize the centering of the two servos. Leave the remote control powered up. Figure D10 TETRIX by Pitsco 39132 V0909...
  • Page 16 32 mm channel ends – this will compensate for the difference in height. Be sure to angle the flat brackets toward the other side of the gripper. Figure D13 TETRIX by Pitsco 39132 V0909...

  • Page 17: E - Advanced Construction Techniques

    E – Advanced Construction Techniques The TETRIX Robotic Design System is intended to be used as it comes – the structural elements come in a variety of shapes and sizes to provide building flexibility. However, advanced robot builders can go a step further and customize the metal structural elements by cutting them to different lengths and angles and by drilling –...

  • Page 18: F - Using The R/C

    F – Using the R/C Several R/C units will work with TETRIX Tip: Wires the TETRIX system. Shown in this section is the Futaba T6EX (Pitsco Wires from servos and product 34243). The instructions other electrical compo- below are general, and you should nents can get messy and refer to your R/C’s instructions for...
  • Page 19 (either M1A options may need to be and B or M2A and B). programmed to achieve desired motor operation, such as motor reversing, mixing, and so forth. Figure F9 TETRIX by Pitsco 39132 V0909...

  • Page 20: G - Using The Lego® Nxt Intelligent Brick

    G – Using the LEGO® NXT Intelligent Brick To create an autonomous TETRIX robot, you can use the LEGO® NXT Intelligent Brick. The Hard-Point Connectors to enable this are available at www.LEGOeducation.us. You will also need the HiTechnic Servo Controller, HiTechnic DC Motor Controller, 10-cell battery pack, and enough Studless Technic Beams, Angle Beams, and Long Connector Pegs to attach the NXT elements to a TETRIX robot design.

  • Page 21: Connecting The Nxt To Tetrix Elements

    8) Insert the red wire from the on/off switch into the HiTechnic Servo Controller where it is labeled Battery+. Tighten the screw. Connecting the NXT to TETRIX Elements Connecting the NXT to TETRIX elements requires a Hard-Point Connector designed for this purpose. The HiTechnic Servo Controller (Figure G2a) and the HiTechnic DC Motor Controller (Figure G2b) can be...
  • Page 22 Attaching NXT Sensors – The sensors that come with the NXT Figure G6 Intelligent Brick can also be used with the TETRIX system. They attach to the structural elements the same way as the NXT brick and HiTechnic DC Motor Controller and Servo Controller – using Hard-Point Connectors, Studless Technic Beams, and Long Connector Pegs.

  • Page 23: Additional Items Available For Purchase

    This super-long channel isn’t a standard size in the base set, but is available for robot designs that need longer pieces. Heavy-duty aluminum channel pieces are the structural base for building with the TETRIX™ Robotics Design System. 39069 416 mm WIDE RuBBER BanDs TETRIX™...

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