- Constructing the Delta Stage with transmission illumination
- Constructing the Delta Stage with reflection illumination

# Transmission illumination

These instructions show you how to add transmission illumination and optics module to your Delta Stage.

### Parts

- 1 100Ω resistor
- 6 cm of 3.2mm heat shrink
- 4 cm of 4.8mm heat shrink
- 40 cm of black 0.5A instrument wire
- 1 condenser lens
- some electrical tape
- 1 female connector housing
- 2 female crimp terminal contact
- 1 LED
- 2 M2x6mm screws
- 3 M3 nut
- 2 M3 washer
- 2 M3x8mm screw
- 1 objective lens
- 1 Raspberry Pi camera v2
- 40 cm of red 0.5A instrument wire
- Some solder
- 1 tube lens

### Tools

- 1 1.5mm hex screwdriver
- 1 2.5mm hex screwdriver
- 1 crimp
- 1 heat gun
- 1 soldering iron
- 1 wire cutters
- 1 wire stripper

### Printed tools

- 1 lens tool

### 3D printed parts

- 1 camera cover
- 1 condenser housing - Print in black.
- 1 illumination dovetail
- 1 transmission optics module casing - Print in black.

# Illumination

## Step 1: Wire the LED

Snip the longer (positive) leg of the LED using wire cutters.

Snip one leg of the 100Ω resistor using wire cutters.

Solder the shorter leg of 100Ω resistor to the positive leg of the LED with a soldering iron and solder. Snip the leg of the resistor so that the two legs are approximately the same length using wire cutters.

Cut the red 0.5A instrument wire and the black 0.5A instrument wire to 40cm lengths using wire cutters.

Strip both ends of the red 0.5A instrument wire and [black 0.5A instrument wire ] with a wire stripper.

Solder the red 0.5A instrument wire on to the free leg of the [330Ω resistor] using a soldering iron and solder.

Solder the black 0.5A instrument wire on to the free leg of the LED using a soldering iron and solder.

Cover each leg of the LED and resistor with some 3.2mm heat shrink so that the exposed metal cannot short-circuit. Use a heat gun to heat the 3.2mm heat shrink on both legs.

Slide some 4.8mm heat shrink over both heat shrinks and heat with a heat gun.

Twist the two wires together. If they are not the same length then trim and re-strip.

Using a crimp, crimp a female crimp terminal contact on to the ends of both the wires.

Push both crimp terminals into a female connector housing.

You have now made a wired LED.

## Step 2: Insert the Condenser Lens

Take a condenser lens and place it on top of the lens tool with its flat side down.

Push the condenser housing down vertically on top of the lens. make sure it is flat, pushing again harder if necessary.

## Step 3: Insert the LED

Push the LED into the top of the condenser housing. If it is loose, secure it in place with some electrical tape.

## Attach the illumination dovetail

Put the illumination dovetail on the condenser mount of the main body.

Put one M3 washer on to two M3x8mm screws.

Insert two M3 nuts into the nut slots on the condenser mount.

Screw the illumination dovetail onto the main body using a 2.5mm hex screwdriver.

## Attach the condenser on to the dovetail

Slide the condenser housing down the dovetail. You can adjust its position up and down by sliding it on the dovetail. You can move it back and forward by loosening the dovetail and and tightening it when it is the correct position.

# Optics Module

## Step 4: Clean the optics module casing

After printing the transmission optics module casing there may be strings or dust. Clean these out so they won't block the light or fall onto the camera sensor.

## Step 5: Attach the objective screw

Slide a M3 nut into the slot at the top of the transmission optics module casing and screw a M3x8mm screw into it using a 2.5mm hex screwdriver.

## Step 6: Insert the tube lens

Put the tube lens onto the lens tool, with the more convex side down.

Push the transmission optics module casing down on top of the lens until it is flat and secure.

## Step 7: Attach the objective lens

Screw the objective lens into the top of the transmission optics module casing. Be careful to screw it in straight, to avoid cross-threading.

## Step 8: Remove the camera lens

Remove the plastic film from the lens of the Raspberry Pi camera v2.

Unscrew the camera lens using the camera lens tool supplied with the camera.

Once you've removed the lens, keep the camera face down or put some tape over the lens holder to stop dust settling on the sensor (which is difficult to clean!).

## Step 9: Attach the camera to the optics tube

Attach the Raspberry Pi camera v2 to the bottom of the transmission optics module casing. Put the camera cover over the top. Secure everything in place with two M2x6mm screws using a 1.5mm hex screwdriver.

## Step 10: Attach the optics module to the Delta Stage

Slot the objective screw into the mount inside the main body.

When the optics module is in roughly the correct position, the objective screw can be tightened through the access hole in the back.

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