Assembly Guide

Purpose

Assemble the Deepthroat Trainer 2026 updated all-in-one case build from the prepared PCB, housing, screen, sensor, battery, cable harness, velcro, and screws.

Read Safety first before you start. Warnings appear at the steps where each hazard occurs.

Required Parts and Consumables

• DTT PCB
• DTT loop velcro
• 3D printed DTT housing
• Screen
• Sensor
• Battery
• Cable harness
• 4x 0408LTFB screws
• Hot glue

Tools

• Hot glue gun
• T8 screwdriver bit
• Electric screwdriver or similar
• Torch

Prepare Components

1. Confirm the full kit is present.

   

2. Confirm the PCB, loop velcro, and housing are ready.

   Confirm the DTT loop velcro is installed on the PCB before continuing.

   

   

   Static-sensitive board

   Touch grounded metal before you handle the PCB, hold it by its edges, and avoid touching components and connector pins.

3. Inspect the inside of the trainer case.

   

4. Clean and prepare before assembly.

   Gently torch inside of the 3D housing to remove filament strands. Flash the PCB before assembly.

   Torch safety

   Torch the housing while it is empty, before the battery or any electronics go in. Work on a non-flammable surface with good ventilation, keep the flame moving in short passes, and keep it away from the battery, wires, and anything that can burn. Printed plastic softens and can catch fire quickly. Let the housing cool before you handle it.

Assembly Steps

1. Install the screen.

   Remove the film from the screen. Bend the ribbon gently inwards. Align the screen with the registration features and glue it into place with hot glue. Ensure the hot glue does not block the button arm.

   Hot glue

   The glue gun nozzle and fresh glue can burn skin. Rest the gun on its stand between uses and let the glue cool before you touch it.

   

2. Install the sensor.

   Use a screwdriver to gently insert the sensor into the casing, pressing on the silver screws to add force without breaking the plastic. Make sure the sensor lays flush with the casing. Glue it into place with hot glue.

   

   

3. Install the battery.

   Insert the battery writing-side down. Run a bead of glue along the top bar to secure it in place.

   LiPo battery

   Do not use a battery that is swollen, dented, punctured, or has damaged wires. Do not bend, pierce, or crush it, and keep its connector away from metal tools. Keep the hot glue gun nozzle from touching the battery.

   

4. Connect the screen and sensor harness.

   Slide the black harness connector over the screen pins as shown. Clip the white connector into the sensor.

   

5. Connect the harness to the PCB.

   Clip the harness into the PCB using the appropriate connectors.

   

6. Route the wires.

   Route the wires around the peg as shown, and push the wires deeper into the housing, avoiding the button and other pinch points.

   

7. Fasten the PCB to the trainer case.

   Use the screwdriver to fasten the PCB to the trainer case.

   Check for pinched wires

   Before you drive the screws, check that no wire is trapped under the PCB or next to a screw hole. A pinched or cut battery wire can short the battery.

   

Final Assembly

1. Confirm the screen is glued in place and the button arm is not blocked.
2. Confirm the sensor is flush with the casing and glued in place.
3. Confirm the battery is secured writing-side down.
4. Confirm the harness is connected to the screen, sensor, and PCB.
5. Confirm wires are routed around the peg and pushed away from the button and pinch points.
6. Confirm the PCB is fastened to the trainer case with the four 0408LTFB screws.

QC Checklist

• PCB was flashed before assembly.
• Interior filament strands were removed from the 3D printed housing.
• Screen film was removed.
• Screen ribbon was bent gently inward.
• Screen was aligned with registration features.
• Hot glue does not block the button arm.
• Sensor lays flush with the casing.
• Sensor is glued in place.
• Battery is installed writing-side down.
• Battery is secured with glue along the top bar.
• Black harness connector is seated over the screen pins.
• White connector is clipped into the sensor.
• Harness is clipped into the PCB connectors.
• Wires are routed around the peg.
• Wires are pushed deeper into the housing and avoid the button and pinch points.
• PCB is fastened to the trainer case.