Video-UI Module

The video-UI module is essentially a housing for two Raspberry Pi boards that provide two important support services: a local user interface at the robot (UI), and recording/archival of video streams from on-robot cameras (video).

Parts

Tools

1 2-56 tap
1 4-40 tap

Step 1: Prepare the components

3D print the Video-UI module enclosure, Video-UI module front cover, and Video-UI top cover.
Tap the holes: 4, 4-40 holes using a 4-40 tap on the top and front that secure the cover, and 8, 2-56 holes using a 2-56 tap on the internal Pi retention threads.

Step 2: Prepare the Raspberry Pi boards

Follow the instructions in the Pi flashing appendix to prepare two SD cards (min. 64gb, high endurance) with appropriate hostnames:
For the UI Pi: hostname "afl-ui" with standard password
For the Video Pi: hostname "afl-video" with standard password
Install the SD cards into their respective Raspberry Pi boards.

Step 3: Assemble the module

Mount the two Raspberry Pi boards to the internal Pi retention threads using 2-56 screws. Position the Video Pi on the left side and the UI Pi on the right side when facing the port section of the enclosure.
Connect the Ethernet patch cables (1 ft) to both Pi boards and route them through the side slots in the enclosure.
Connect the HDMI cable (1 ft) from the UI Pi to the touchscreen display and secure it through the top cover.
Connect any additional peripherals needed:
Wireless USB keyboard/mouse dongle to the UI Pi if needed for setup
USB storage device to the Video Pi for extended video storage if required

Step 4: Complete the assembly

Carefully route all cables to avoid pinching when the covers are installed.
Attach the front cover to the main enclosure using 4-40 screws, 1/4" long.
Attach the top cover to the enclosure using 4-40 screws, 1/4" long.
Connect the power supplies to both Raspberry Pi boards through the access ports in the enclosure.

Step 5: Configure the software

Power on both Raspberry Pi boards and ensure they boot correctly.
On the UI Pi:
Configure the touchscreen interface to display the control dashboard
Set up the connection to the main control system
On the Video Pi:
Configure the video capture software to record from the connected cameras
Set up the video storage and archiving system
Configure any required network streaming capabilities

Step 6: Test the module

Verify that the UI touchscreen displays the control interface correctly and responds to touch input.
Test the video capture functionality by connecting a camera to the capture device and ensuring that video is being recorded properly.
Verify network connectivity between both Pi boards and the main control system.
Test all user interface controls to ensure they correctly communicate with the rest of the system.

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