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Assembly

{% hint style="danger" %}Please ignore the steps related to GPS and other items not included in AIM kit {% endhint %}

Preparing Lower Chassis

Step.No. Step Name Description Link
1 Adding front and side covers Proceed to add front and side cover by following the link https://nxp.gitbook.io/mr-b3rb/mr-b3rb-m-pre-production-mechanical-assembly-guide/step-1-preparing-lower-chassis.#adding-front-and-side-covers
2 Remove top plate screws and clips Use a hex screwdriver or Allen Key and remove all top and side screws securing the top plate to the metal frame and carefully set them aside. These screws are important for later steps when you'll need to reattach the metal frame https://nxp.gitbook.io/mr-b3rb/mr-b3rb-m-pre-production-mechanical-assembly-guide/step-1-preparing-lower-chassis.#remove-top-plate-screws-and-clips
3 Assemble LED light and covers Proceed to install the LED lights.Follow the link for assembling the front part of the car pieces https://nxp.gitbook.io/mr-b3rb/mr-b3rb-m-pre-production-mechanical-assembly-guide/step-1-preparing-lower-chassis./step-1a-assemble-led-light-and-covers#assemble-led-light-and-covers
4 Attach side plastic side skirts Proceed with attaching the side parts of the car by following the link https://nxp.gitbook.io/mr-b3rb/mr-b3rb-m-pre-production-mechanical-assembly-guide/step-1-preparing-lower-chassis./step-1b-attach-side-plastic-side-skirts#attach-side-plastic-side-skirts

Troubleshoot

  • For screwing of LED with the polycarbonate part , 13 mm size screws are used and Screwdriver with 0#+ number found in the buggy kit is used.
  • Use Screwdriver with 5.5 number for removing and attaching nylon lock nuts used as a spacer between the polycarbonate and the LED PCB.

Mounting the boards to the metal frame

We will now mount the NavQPlus and The MR-CANHUBK344 to the metal top plate.

Step.No. Step Name Description Link
1 Mounting the NavQPlus on the metal frame Use the provided M3 screws to securely attach the board's corners to the metal frame https://nxp.gitbook.io/mr-b3rb/mr-b3rb-m-pre-production-mechanical-assembly-guide/step-2-mounting-the-boards-to-the-metal-frame/step-2a-mounting-navqplus#mounting-the-navqplus-on-the-metal-frame
2 Mounting MR-CANHUBK344 and assembling into enclosure MR-CANHUBK344 is the real time controller board for the robot. After successfully attaching the NavQPlus, the next step is to install the MR-CANHUBK344 evaluation board. https://nxp.gitbook.io/mr-b3rb/mr-b3rb-m-pre-production-mechanical-assembly-guide/step-2-mounting-the-boards-to-the-metal-frame/step-2b-mounting-mr-canhubk344#assmble-mr-canhubk344-into-enclosure
3 Assemble MR-CANHUB-ADAP to MR-CANHUBK344 ttach the MR-CANHUBK344 assembly to the top plate which already contains the NavQPlus board. https://nxp.gitbook.io/mr-b3rb/mr-b3rb-m-pre-production-mechanical-assembly-guide/step-2-mounting-the-boards-to-the-metal-frame/step-2b-mounting-mr-canhubk344#assemble-mr-canhub-adap-to-mr-canhubk344
4 Assemble MR-CANHUBK344 onto top plate MR-CANHUBK344 board should be attached with M3*5mm screws to screw it in the holes from bottom side https://nxp.gitbook.io/mr-b3rb/mr-b3rb-m-pre-production-mechanical-assembly-guide/step-2-mounting-the-boards-to-the-metal-frame/step-2b-mounting-mr-canhubk344#assemble-mr-canhubk344-onto-top-plate
5 Mounting Standoff for LIDAR arch stability Install the standoff which gives stability for later steps in the mounting of the robot. The screws are the ones that come with the purple standoff and the nut are size M3 https://nxp.gitbook.io/mr-b3rb/mr-b3rb-m-pre-production-mechanical-assembly-guide/step-2-mounting-the-boards-to-the-metal-frame/step-2c-mounting-standoff-for-lidar-arch-stability#standoff-for-lidar-arch-stability
6 Attach camera to front plastic mount The camera housing included with the NavQPlus mounts to the front "GoPro" style mount on the front plastic https://nxp.gitbook.io/mr-b3rb/mr-b3rb-m-pre-production-mechanical-assembly-guide/step-2-mounting-the-boards-to-the-metal-frame/step-2e-attach-camera-to-front-plastic-mount#attach-the-navqplus-camera-to-the-front-plastic-mount

Troubleshoot

  • We need to take out the battery extender from NAVQ PLUS Box and connect it to the Battery Management System of the bot.
  • Use Screwdriver with H1.5 number to unscrew the screws from the NAVQ PLUS board.
  • Use Screwdriver with 2.5 number to unscrew the screws from the white plastic cover of the NAVQ PLUS board.

Wiring

Step.No. Step Name Description Link
1 Overview of Wiring Wiring overview and intention https://nxp.gitbook.io/mr-b3rb/mr-b3rb-m-pre-production-mechanical-assembly-guide/step-3-wiring
2 Wiring RGB LED (PDB V0) Wiring instruction to connect LED https://nxp.gitbook.io/mr-b3rb/mr-b3rb-m-pre-production-mechanical-assembly-guide/step-3-wiring/wiring-rgb-led-pdb-v0
3 Wiring QDEC cable Wirimg instructions to connect PDB to MR-CANHUBK344 https://nxp.gitbook.io/mr-b3rb/mr-b3rb-m-pre-production-mechanical-assembly-guide/step-3-wiring/wiring-qdec-cable
4 Wiring T1 Ethernet cable T1 wire connection for NavQPlus and MR-CANHUBK344 https://nxp.gitbook.io/mr-b3rb/mr-b3rb-m-pre-production-mechanical-assembly-guide/step-3-wiring/wiring-t1-ethernet-cable
5 Wiring PWM cables PWM cable wiring to MR-CANHUBK344 https://nxp.gitbook.io/mr-b3rb/mr-b3rb-m-pre-production-mechanical-assembly-guide/step-3-wiring/wiring-pwm-cables
6 Wiring Power cables Power cable connecting PDB to MR-CANHUBK344(ignore GPS section) https://nxp.gitbook.io/mr-b3rb/mr-b3rb-m-pre-production-mechanical-assembly-guide/step-3-wiring/wiring-power-cables
7 Wiring MR-CANHUBK344 Wiring connections related to MR-CANHUBK344(ignore GPS section) https://nxp.gitbook.io/mr-b3rb/mr-b3rb-m-pre-production-mechanical-assembly-guide/step-3-wiring/backup-copy-of-step-3a-wiring-mr-canhubk344
8 Wiring NavQPlus Wiring connections related to NavQPlus https://nxp.gitbook.io/mr-b3rb/mr-b3rb-m-pre-production-mechanical-assembly-guide/step-3-wiring/step-3b-wiring-navqplus

Final Steps

After connecting all the cables, proceed to attach the metal board frame to the robot car using the screws you removed at the beginning

{% hint style="danger" %} Please make sure the antena on NavQ+ board is outside of the metal covering to be covered in last step of assembly {% endhint %}

Step.No. Step Name Description Link
1 Front Plastic Shield with Mount for Camera Attach the plastic shield with the camera housing to the robot's front using 1cm M2.5 screws https://nxp.gitbook.io/mr-b3rb/mr-b3rb-m-pre-production-mechanical-assembly-guide/step-4-final-steps#front-plastic-shield-with-mount-for-camera
2 Back Plastic Shield Attach the back plastic shield of the robot https://nxp.gitbook.io/mr-b3rb/mr-b3rb-m-pre-production-mechanical-assembly-guide/step-4-final-steps#back-plastic-shield
3 Wiring MR-CANHUBK344 Wiring connections related to MR-CANHUBK344(ignore GPS section) https://nxp.gitbook.io/mr-b3rb/mr-b3rb-m-pre-production-mechanical-assembly-guide/step-3-wiring/backup-copy-of-step-3a-wiring-mr-canhubk344
4 Lidar mounted to metal LIDAR Arch Attach the LIDAR to the LIDAR Arch https://nxp.gitbook.io/mr-b3rb/mr-b3rb-m-pre-production-mechanical-assembly-guide/step-4-final-steps/copy-of-step-4-last-steps-lidar-arch-update#prepare-lidar-mounted-to-metal-lidar-arch
5 Assembly of buggy top covering Refer to video on link to proceed attaching the upper plating needed for covering the buggy https://nxp.gitbook.io/mr-b3rb/mr-b3rb-bmf-out-of-box-assembly-guide#mr-b3rb-bmf-out-of-box-assembly-video