Hoverboard Converted to Gigantic RPi Tank

As noted in this project write-up, “Building robots is a lot of fun, it gives you the opportunity to raise your skills in electronics, crafting, software, 3D modeling, 3D printing [etc],” however it can also get quite expensive. Unless you have a huge amount of money to spend, or the backing of a corporation, some creative sourcing methods are needed to not break the bank. As it turns out, hoverboards are an amazing source of components for mobile robots, including a dual motor driver, large battery (36V 4.4AH in this case), charger, two high torque motors, and a variety of other useful bits like switches and connectors.

The hoverboard is eventually converted into a tank, along with 2020 extrusion salvaged from another project, and a variety of 3D-printed parts. New bipropellant firmware was loaded into the motor controller, allowing a Raspberry Pi to interface with it robot using a USB-to-serial adapter.

With the controls somewhat sorted out, a massive amount of 3D printing was done to produce the treads, as well as gear assemblies that fit over the two driving wheels, and a pair of idlers. The result is a massive RC tank, which can be seen in the video below towing an office chair. It features an IR camera and lighting, and the project even includes a shopping trolley for transportation—though one would certainly be surprised to see what kind of groceries are in tow!