Sensor Assembly

Step-by-Step Instructions

In the following instructions, several specific components of the GelSlim 4.0 sensor body are referenced. Use the following diagram to interpret these references.

• Insert the LED Harnesses into the sensor body
  Note: In the following steps, be gentle with the LED Harnesses! They're fragile and shouldn't be bent or folded during insertion. Visuals for inserting the red LED Harness are provided below.

  • Thread the tail of the Blue LED Harness into the blue LED cavity and out through the back of the sensor body
    Note: The LEDs should face into the center of the lens cavity. 

  • Pass the tail of the Blue LED Harness through the sensor body until you are able to rest the back of the LED array against the wall of the lens cavity

  • Slide the LED array along the wall of the lens cavity until it reaches the opening of the blue LED cavity

  • Tilt the top of the LED array in toward the center of the lens cavity and press the bottom edge of the LED array into the blue LED cavity 

  • Press the LED array into the blue LED cavity using your fingers

  • Press the tip of the metal spudger into the black plastic center of the LED array and push firmly to fully seat the LED array into the blue LED cavity

  • Thread the tail of the Red LED Harness into the red LED cavity and out through the back of the sensor body
    Note: The LEDs should face into the center of the lens cavity. 

  • Pass the tail of the Red LED Harness through the sensor body until you are able to rest the back of the LED array against the wall of the lens cavity

  • Slide the LED array along the wall of the lens cavity until it reaches the opening of the red LED cavity

  • Tilt the top of the LED array in toward the center of the lens cavity and press the bottom edge of the LED array into the red LED cavity 

  • Press the LED array into the red LED cavity using your fingers

  • Press the tip of the metal spudger into the black plastic center of the LED array and push firmly to fully seat the LED array into the red LED cavity

  • Thread the tail of the Green LED Harness into the green LED cavity and out through the back of the sensor body
    Note: The LEDs should face into the center of the lens cavity. 

  • Pass the tail of the Green LED Harness through the sensor body until the LED array reaches the opening of the green LED cavity

  • Tilt the top of the LED array in toward the center of the lens cavity and press the bottom edge of the LED array into the green LED cavity 

  • Press the LED array fully into the green LED cavity using your fingers

  • Press the tip of the metal spudger into the black plastic center of the LED array and push firmly to fully seat the LED array into the green LED cavity

• Insert the lens and gel pad assembly into the lens cavity

• Insert the LED Driver into the sensor body, as shown below

• Trim the tail of each LED Harness so that it's the right length to insert into its respective FPC connector, as shown below
  Note: Trim iteratively. You can always take more off, but you can't extend the length if you take too much off. 

• Connect the tail of each LED Harness to the LED Driver, as shown below
  Note: The connectors on the LED Driver are also delicate. Do not push against them with a lot of force.

  • Flip up the white latch on each FPC connector

  • Slide the tail of each LED Harness into its FPC connector, using tweezers to grip the tails

  • Flip down the white latch on each FPC connector to secure the connection 

• Connect the camera adapter to the CSI port on the CSI-to-HDMI board

  • Pull the black latch on the FPC connector from both sides until it moves to the open position

  • Insert the camera adapter ribbon into the FPC connector

  • Push the black latch on the FPC connector from both sides until it moves to the closed position to secure the connection 

• Use the screwdriver to attach the CSI-to-HDMI board to the sensor body with 4 M2 screws, as shown below

• Connect the camera ribbon to the camera adapter

  • Flip up the black latch on the FPC connector

  • Insert the camera ribbon into the FPC connector

  • Flip down the black latch on the FPC connector to secure the connection 

• Insert the camera into the camera hole

  • Put the lens of the camera into the camera hole

  • Orient the camera and fold its ribbon cable as shown below

• Secure the back cover

  • While holding down the ribbon cables, slot the back cover onto the sensor body with the countersinks for the small screws facing up and the recess for the camera facing down

  • Use the screwdriver to fasten the back cover to the sensor body with 3 M2 screws