Build Instructions

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• 1

  Step 1

  Electrical assembly

  - Desolder the connectors on the ULM2008 boards (too tall for fitting into body).

  - Solder wires in their place, crimp dupont male ends (or simply tin the ends with a soldering iron and tidy so they will fit securely into a breadboard).

  - Front/robot-right motor driver goes to pins 4-7, Rear/robot-left motor driver goes to pins 8-11.

  - Wire the positive tab of a battery pack to the negative tab on the second battery pack.

  - Wire (red) the positive tab of the second battery pack to a switch and then wire the switch to a dupont male end to be put into Vin on the Arduino.

  - Wire (black) the negative tab of the first battery pack to a dupont male end to be put into GND on the Arduino.

• 2

  Step 2

  Mechanical assembly

  - Stepper motors into parts A1 & A2

  - Ends B1 & B2 slot into A1 & A2 to make a rectangle (B2 has no tabs, it goes in at the hook ends of A1 & A2)

• 3

  Step 3

  - A1,A2,B1,B2 assembly snaps into base C (line it up and pull the two spring clips back if necessary)

  - Tape a nut into slots on B1 & B2 (tape on one side should be enough to stop the nut falling out)

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