Here is another Arduino robot that can take your coding skills to the next level. The Adeept 5-DOF Robotic Arm has 5DOF and an OLED display. It is ready for C/C++ coding. You can program it to draw, type, and move objects. The robot has a manual control panel too.
The Adeept Robotic Arm Driver Board is based on ATMEGA328P. It comes with acrylic parts, 0.96-inch OLED display, 6 servos and all the parts you need to put it together.