an Arduino compatible board and sensors, and an Android control application for your smartphone. It looked easy and fun to work with, and I wish that STEM robot kits like this were available when ...

Case in point: the ELEGOO Tumbller robot kit. It’s a self-balancing, LED-blinking, obstacle-dodging STEM toy that’s somehow ... the best part is that it’s Arduino-compatible.

The kit consists of a jar, electrodes, some 3D printed parts, and a pre-flashed Arduino ... try more advanced techniques. Often STEM kits lean heavily to robotics or computer science, but there ...