RC Soviet tractor DT-75 Kazakhstan (1\10 scale)

myminifactory

This model was created by converting a GTA SA mod using ZModeler and adapting it for printing in SketchUp. As my first project, I made numerous mistakes during the printing process, resulting in several holes throughout the design. The model features thick walls due to the low-quality filament used, which makes it prone to breaking. To reinforce certain areas, I employed super glue, while the cabin was strengthened with a paperclip's wire, soda, and additional super glue. Additionally, I fashioned door hinges and handles from paperclips. The tractor operates on four yellow gears controlled by an Arduino system. Although not the most powerful option for outdoor use, it is sufficient for home or asphalt applications. Running it on 3S might increase its power, but I'm currently using a 2S setup. Since the design requires tank-style control and I only have classic car controls available, I created a radio-controlled version using an Arduino Nano with NRF24L01 and L298N modules. Users can opt for either simple discrete RC systems from toy tanks or more advanced 6-8 channel equipment. The cogs and tracks were printed in PLA to ensure their strength; PETG could be a suitable alternative. Each side of the model requires 44 tracks, two main cogs, two rolls, two carriages (karetka), and four small cogs. The carriages and rolls are attached using M4 screws, while the small cogs are secured with M3 screws and spacers. The gearbox is mounted using M3 screws with spacers to align it with the second gearbox. The front blade is an optional component that must be assembled from various parts, including otval and otvalr components with mirrored counterparts. This blade is moved by a servo SG90 attached to the tractor's front section; I used a bent wire hinge fashioned from a paperclip, screwed it onto the blade, and inserted it into the servo arm for easier and more cost-effective operation compared to linear servos.