The BeagleBone is a low-cost open-hardware development board. If you thought of it as a more powerful Arduino that wouldn’t be terrible, but it wouldn’t but quite right. The ARM processor on the board runs a full-scale operating system and ships with version of Linux (Angstrom) designed for embedded applications. There are tons of operating systems that run ARM processors, including Debian, Ubuntu, Fedora, and many many others.
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.