What I really love about Lego's Modular System - no matter how old or new the components are, they still can be fit together.
We can also mix them up using components from one kit with some others. This project is certainly a proof of that.


I owned an incomplete Lego's Star War Battle Droid (#8001). The Droid can be folded to fit in the small storage space.
The fun part is that we can make the Droid to draw its weapon from the shoulder by rotating the gear on its back. 

The drawback of this Battle Droid is it needed to have elastic rubber bands to hold them together, without the rubber bands it could not stand up properly, and it lost its value as collectable, and also considered incomplete.

Since the Droid is not a walkable or movable by itself, I think it will be fun to alter this Battle Droid by adding Johnny Five's (another fictional robot in the movie called "Short Circuit" released in 1986) main features: the triangle tracks and rear pivoting castor to the Droid. Then trying to make it move. 

This Lego Track Bot was designed to be an example to show how to use  Palm Arduino V3 with the Lego's components.

 Note: See more photos of my Lego Track Bot and video in Step 14.

Step 1: Parts and Tools

In this project, I created a robot that combined the parts from components list below,

  • Incomplete set of Star War Battle Droid (#8001),
  • Treads and Hubs from RCX Mindstorm Set,
  • Commonly used Technic Bricks and Plates
  • Motors and motor controller.
  • Sensor(s) such as IR distance sensor, etc. might be added.

Palm Arduino V3
For the details, schematic and parts for Palm Arduino V3 go here.

Lego case for Palm Arduino V3:
Bricks and Plates are already included in the Lego Parts list below.

DIY Motor Controller PCB (Photo 4) or Motor Shield

- 1 no. L293D (or SN755401) IC
- 1 no. 0.1uF Ceramic Capacitor
- 1 no. 100uF Capacitor
- Jumper Wires
- Perf. Board
- 2-Pin Right Angle Header (Motor Power Connector)
- 3-Pin Right Angle Connector (for Servo if you plan to use one, this)
- 2 nos. 2-Pin Right Angle Connector (Straight is fine too!) for motors

Tamiya Twin-Motor Gearbox (No. 97)

Lego Technic Star War Battle Droid (#8001)
I got my on ebay the one I used in this project was incompleted set and had no instruction booklet, and it was cheaper than complete or mint collectable kit

Lego Technic Bricks, Plates, and Components

All the Lego parts used in this project are from what I own. I bought them from Lego online "Pick A Brick" Shop. Some I got them from bidden on eBay.

The following Lego components are separate components from the Lego Star War Battle Droid (#8001) above.

4 nos. 1x16 Technic Brick (#3703)
4 nos. 1x12 Technic Brick (#3895)
2 nos. 1x10 Technic Brick (#2730)
4 nos. 1x8 Technic Brick (#3702)
7 nos. 1x6 Technic Brick (#3894)
7 nos. 1x4 Technic Brick (#3701)
6 nos. 1x2 Technic Brick (#3700)

10 nos.  1x2 Plate (#3023)
4 nos.    1x3 Plate (#3623)
11 nos.  1x6 Plate (#3666)
8 nos.    1x8 Plate (#3460)

2 nos. 1x2x2 Corner Plate (#242)

7 nos. 2x2 Plate (#3022)  (Note: Use two old 2x2 plate to use with Twin-motor Gearbox)

2 nos. 2x4 Technic Plate (#3709)

4 nos. 3x3 Liftarm (#32249) or 3x3 L Shape Thin (#32056)
9 nos. Liftarm 1x3 Thin (#6632)

6 nos. Bush for Cross Axle (#6590)
2 nos. 1/2 Bush (#32123)

24 nos. Connector Bush with Friction/Crossaxle (#43093)
4 nos.   Connector Peg with Friction (#2780)
4 nos.   Connector Peg with Friction 3M (#6558)
2 nos    Fric. Snap W/Cross Hole 2M (#32054)

2 nos. Connector Peg with Knob (#4274)

3 nos. Axle Joiner Inline (#6538b)
3 nos. Pin Joiner Round (#75535)

2 nos. Cross Axle 4M (#3705)
6 nos. Cross Axle 5M (#32073)
4 nos. Cross Axle 6M (#3706)
2 no.   Cross Axle 8M (#3707)

Treads and Hubs from RCX Mindstorm Set

8 nos. 16T Gear (#4019)
6 nos. Technic Sprocket Drive Wheel (#32007)
2 nos. 5" Caterpillar Tread (#680C01)

Note: These last two items could be replaced with

  • Lego Technic Tank Wheels & Track for custom army vehicles for example Town Set or Indiana Jones Set, or 
  • NXT Technic Mindstorm Black Treads & Hubs.


Razor Saw
X-acto Knife
Super Glue

this kinda reminds me of in that movie 9 when the dead cloth guy is made into that robot...........WHALES <br>
Wow.. that looks an awe-full lot like a star wars battle droid :)
Top half of it actually is Lego Star War Battle Droid (#8001) + the bottom half is the main feature of Johnny Five, from the movie 'Short Circuit'. <br>
how do u control it??? <br>
At the moment, Micro-Controller (Arduino) do the work. <br>

About This Instructable


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Bio: I am Electronic Visualization Artist. I look at things through the Looking Glasses.
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