# Assemble the motors

## For this section you will need:

### Tools

- 1 2.5mm Ball-end Allen key

### Printed Parts

- 3 cable tidy caps - - Each cap is a different shape
- 3 small gears

### Consumables

- 6 drops of threadlock adhesive

### Electronic Components

- 3 28BYJ-48 micro geared stepper motors

### Mechancial Components

- 6 M4x6mm button head screws

## Step 1: Attach the small gears

- Take a stepper motor and a small gear
- Place the motor on the work surface with the shaft pointing up
- Apply a small drop of threadlock adhesive to each side of the motor shaft near the top
- Align the flat sides of the motor shaft with the flat sides of the hole in the gear.
- Push the gear onto the motor with the flanged side downwards (motor side).
- Repeat for the other two motors

## Step 2: Attach the motors

Note that each motor has a cable tidy cap that is different. Which cap to use should be apparent from the shape.

- Get a 2.5mm Ball-end Allen key ready
- Feed the cable from the motor through the rectangular wall in the outer wall by the x-actuator.
- Place the motor on the motor lugs with the small gear towards the outside of the microscope
- Check that the small gear and the large gear are meshed correctly
- Take the x cable tidy cap and place it over the motor
- Check that the motor cable is running through the cable tidy rather than pinched underneath.
- Fasten the motor and cable tidy caps to the motor lugs with two M4x6mm button head screws
- Repeat for y and z actuators. For the z-actuator use the rectangular slot to the left of the actuator.

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