Small is often subjective. For example, the school bus is smaller than the Airbus A380. But other things themselves are very small, which can explain the problem without comparison. In the following video, this mini RC car is like this. This is the RC model of a smart car. Compared with other vehicles on the road, it is very small both subjectively and absolutely. But the appearance of the [diorama111] project is only half that.
Starting from the static display model, [diorama111] completely disassembled the 1 / 87 scale smart car and began to work. Full scale steering is achieved through a very, very small stepper motor that drives a custom knuckle connected to a manual suspension. They are art in themselves.
Do you need tweezers to assemble your project?
The drive is provided by another small stepping motor. If [diorama111] stops there, it is also worth noting that a 1 / 87 smart car moves in an 8-shape around a small bottle of model paint. Instead, [diorama111] keep moving! This car has working turn lights and brake lights (including the third tail light of the rear window!) And headlights. There is even a hazard light function.
These electronic products are handmade with enameled wire and SMD components on perf board. They are a miniaturization research in themselves. In this design, a small processor seems very suitable. We admire [diorama111] for his firm hands and patience to build such a small RC car, let alone a car that pays so much attention to all the details.
If a small hacker like this lets your thimble sized boat float, you may also appreciate this precious little PDP-11 and terminal.