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Step 7Circuitry
Below is the circuit diagram for the entire ghost climber device. Notice that the servomotors have their own power supply in the form of 4 AAA batteries.
I know the wiring looks intimidating, but all of the different components are on their own quite simple circuits, usually consisting of a simple 5V-to-ground circuit with another wire connecting to an input or output pin.
What I haven't shown on the diagram is the optional 9V power supply for the Arduino. I recommend wiring it up to the same switch as the servomotor battery circuit, although still on its own circuit. That just makes it slightly easier to turn power on and off to the whole device at the same time.
Carefully wire it all up, test it, then solder it together. I attached components to the base plank where necessary, using wood screws to attach the Arduino and plasticine to make a stylish case for the three buttons.
I know the wiring looks intimidating, but all of the different components are on their own quite simple circuits, usually consisting of a simple 5V-to-ground circuit with another wire connecting to an input or output pin.
What I haven't shown on the diagram is the optional 9V power supply for the Arduino. I recommend wiring it up to the same switch as the servomotor battery circuit, although still on its own circuit. That just makes it slightly easier to turn power on and off to the whole device at the same time.
Carefully wire it all up, test it, then solder it together. I attached components to the base plank where necessary, using wood screws to attach the Arduino and plasticine to make a stylish case for the three buttons.
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