In the past few years, we have covered plenty of educational robots that can teach kids coding. The SunFounder GalaxyRVR is also worth a look. It is an Arduino compatible Mars rover inspired robot with a solar panel that can overcome uneven terrain. It comes with app control and can be programmed in C++. It has an ultrasonic module and is ready for expansion.
This robot has RGB light strips and LED lights for operation in the dark. You will be able to use your smartphone to control your GalaxyRVR or get a first person video of what it sees. The battery lasts up to 130 minutes. This robot can overcome rocks, grass, stones, stairs, and mud.
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