The kit comes with Arduino Mega, which will serve as the brain, along with ESP8266 Wi-Fi Shield for remote control, a motor ...

Usually, when you want a servo motor, you simply buy one already made. But if you need something unusual, you can turn any DC motor into a custom servo you can control just like [Dejan] did.

but getting an Arduino starter kit is more convenient. Most already come complete with the UNO board and a bunch of components like LEDs, a temperature sensor, a DC motor, a servo motor ...

A YouTuber has shared his latest project, Legion Mark I, a robot that can both crawl like an insect and drive like a car.