# Robot assembly process **WRO Future Engineers · Queretaro CSS** 26 selected photos, in chronological build order (based on the EXIF capture date/time). Near-duplicate or non-relevant photos were left out. --- ## Before starting you should Print the pieces, STL files are available in STL folder, for this robot the chasis was printed using black PTG using Creality K1C ![3D-printed chassis](IMG_E6620.JPG) --- ## Put the heat-set inserts ![Starting the chassis assembly](IMG_E6623.JPG) --- ## Step 1 of 24 — Shafts and drive gear ![Shafts and drive gear](IMG_E6634.JPG) Lego shafts and the drive gear/pulley, loose parts before being mounted inside the gearbox. --- ## Step 2 of 24 — First gear installed ![First gear installed](IMG_E6636.JPG) Gearbox with the first gear and its shaft already installed inside the chassis. --- ## Step 3 of 24 — Installing traction motor ![Installing the steering servo](IMG_E6642.JPG) The traction motor (blue) being placed at the front of the chassis. --- ## Step 4 of 24 — Side view with traction motor installed ![Side view with steering installed](IMG_E6652.JPG) Side of the chassis showing the traction motor and its wiring already integrated. --- ## Step 5 of 24 — The robot's brain integrated ![The robot's brain integrated](IMG_E6655.JPG) The Raspberry Pi with the AI HAT stacked on the chassis, with the flex cables already connected: the compute system integrated into the structure. --- ## Step 6 of 24 — Securing the compute board ![Securing the compute board](IMG_E6658.JPG) Adjusting and centering the Raspberry Pi/HAT board on the chassis to screw it in place. --- ## Step 7 of 24 — Grove modules ready ![Grove modules ready](IMG_E6664.JPG) Grove LED-button module and relay module, with their wiring, ready to be installed on the chassis. --- ## Step 8 of 24 — Drivetrain from below ![Drivetrain from below](IMG_E6666.JPG) Top view of the chassis showing the drive motor, gears, and wiring already integrated. --- ## Step 9 of 24 — Wiring the motors ![Wiring the motors](IMG_E6669.JPG) Connecting the motor and servo cables to the driver's connectors inside the chassis. --- ## Step 10 of 24 — Battery installed ![Battery installed](IMG_E6675.JPG) Chassis standing upright with the 18650 battery pack now mounted at the rear. --- ## Step 11 of 24 — Front stering bracket parts ![Rear bracket parts](IMG_E6681.JPG) Front steering arm/bracket and hardware, loose before being mounted into the rear axle. --- ## Step 12 of 24 — Installing the front bracket ![Installing the rear bracket](IMG_E6683.JPG) Mounting the front arm/bracket into the chassis's steering axle. --- ## Step 13 of 24 — Front axle assembled ![Rear axle assembled](IMG_E6684.JPG) Front axle with the steering arm and blue connectors already mounted, seen from behind. --- ## Step 14 of 24 — Front axle ready for wheels ![Front axle ready for wheels](IMG_E6688.JPG) Front axle with the steering arm already installed, ready to receive the wheels. --- ## Step 15 of 24 — Lidar mount ![Camera mount and motor](IMG_E6696.JPG) --- ## Step 16 of 24 — Chassis nearly complete ![Chassis nearly complete](IMG_E6706.JPG) The chassis standing upright, showing all the main electronics already integrated vertically. --- ## Step 17 of 24 — Full assembly without wheels ![Full assembly without wheels](IMG_E6708.JPG) Top view of the fully assembled chassis, still without the wheels installed. --- ## Step 18 of 24 — Final wiring adjustment ![Final wiring adjustment](IMG_E6711.JPG) Adjusting a final cable with pliers before proceeding to install the wheels. --- ## Step 19 of 24 — Full wiring visible ![Full wiring visible](IMG_E6712.JPG) Chassis lying on its side, showing the complete wiring running through the whole structure. --- ## Step 20 of 24 — Wheels ready to mount ![Wheels ready to mount](IMG_E6714.JPG) The four tires along with their brass spacers, ready to be installed on the axles. --- ## Step 21 of 24 — First wheels installed ![First wheels installed](IMG_E6715.JPG) The first two rear wheels already installed on the chassis. --- ## Step 22 of 24 — Installing the front wheel ![Installing the front wheel](IMG_E6717.JPG) Mounting one of the front wheels onto the steering axle. --- ## Step 23 of 24 — All four wheels installed ![All four wheels installed](IMG_E6719.JPG) Chassis with all four wheels now mounted: the robot can roll for the first time. --- ## Step 24 of 24 — Robot finished ![Robot finished](IMG_E6721.JPG) Final wiring check with the robot fully assembled and resting on its four wheels. ---