The external dimensions of the base are: 240 mm × 110 mm × 70 mm (length × width × height).

The external dimensions of the slot in the transparent cover are: 234 mm × 104 mm × 5 mm × 2 mm (length × width × depth × slot width).

The transparent cover can be custom-made online using acrylic sheets, with custom dimensions of 230 mm × 10 mm × 230 mm (length × width × height).

Since we ran out of glass glue at home, we used stick-on glue to seal the edges. Unfortunately, the only glue we had was yellow, so the transparent cover doesn’t look very aesthetically pleasing—please disregard this…

The accessories that need to be purchased online include:

One 0.75-square-millimeter pure copper thickened DC power cable with male and female connectors, 18 AWG wire (0.75-square-millimeter DC 5521 female connector, 30 cm long),

One GA12-N20 geared motor for smart cars, a miniature DC gear reduction motor available in 3 V, 6 V, and 12 V (12 V, 60 rpm),

Four sets of imported miniature ball bearings, model catalog (10 mm × 20 mm × 5 mm each),

One XH-W3002 digital display smart microcomputer temperature controller, an electronic temperature control switch (12 V, 120 W),

One low-voltage 12 V/24 V air heater with fan and constant-temperature PTC ceramic heating element (12 V, 50 W),

One AOC LCD monitor power cable, 12 V 5 A power adapter, 12 V 4.2 A/3 A surveillance LED power supply (12 V, 5 A, 60 W or higher);