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Copy file name to clipboardExpand all lines: content/start/assembly.md
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Let's connect all the pieces to the chassis to build your rover.
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1. Use the metal screws and nuts to connect the motors to the chassis. Also use the #1 Phillips bit in the screw driver.
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1. Use the metal screws and nuts on the motors to attach to the chassis. Also use the #1 Phillips bit in the screw driver.
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1. Connect the first motor to the chassis using the screws and nuts. Hold the nut tight with your fingers while you tighten the screw with the screw driver. The wires should point towards the middle of the rover.
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1. Attach the second motor to the rover. Its wires should also point towards the middle of the rover.
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1. Each motor will connect on its side of the rover. See how the cables do not cross each other.
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1. Plug the motor cables into the motor driver. The connector only fits in the driver in one direction.
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1. Using a 20 cm Grove cable, connect the motor driver board to the GrovePi+ port labeled `I2C - 1`. Use the rubber band from the cable to keep the cable organized.
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1. Push the wheels onto the motors. The _arrows_ of the treads should point towards the front as shown.
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1. Use the larger, white nylon screws and the #1 Phillips bit in the screw driver to attached the Ultrasonic Rangers.
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1. Connect the 50 cm Grove cables to the ultrasonic rangers before attaching the screws.
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1. Connect the first ultrasonic ranger to the standoffs using the 3 nylon screws.
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1. Connect the second ultrasonic ranger to the standoffs using the 3 nylon screws.
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1. Connect the ultrasonic rangers to the GrovePi+ ports `D2` and `D3`. Each ranger connects to the port on _its_ side of the rover.
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1. Use the tiny, black nylon screws and the #0 Phillips bit in the screw driver to attach the LEDs to the rover.
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1. Attach the first LED to the standoffs using 2 black screws. There is a third mounting hole, but no screw goes in there or it would block the cable.
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1. Connect the 50 cm Grove cable to the first LED's input.
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1. Connect the Grove cable labeled `LED` to the first LED's input.
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1. Attach the second LED with 2 black screws and connect a 20 cm Grove cable to its input.
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1. Connect the cable from the input of the second LED to the output of the first LED. This is called chaining.
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1. Connect the first LED's cable to the GrovePi+ port `D4`.
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1. Insert 2 zip ties through the holes on the bottom of the rover to hold the cables in place.
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1. Route the zip ties over the top of the cables and down through the holes on the other side of the cables.
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1. The two ends of the zip ties should now be sticking through the bottom of the rover.
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1. Zip the zip ties to hold the cables in place.
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1. Place the battery on the chassis near the front of the rover.
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1. Use the fuzzy pipe cleaners to hold the battery in place. Twist the pipe cleaners tight until the battery doesn't slide out when tipped sideways.
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1. Route the power cable from the power bank under the cover and plug into the top of the Raspberry Pi.
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1. Route all the cables down the side of the Raspberry Pi and out the bottom of the cover.
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1. Use the tiny, white nylon screws and nuts and the #0 Phillips bit in the screw ddriver to attach the chassis cover. Hold the nuts with your fingers while you tighten the screw underneath.
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1. Congratulations! Your rover is now assembled!
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