Take the ESP32-CAM, a board that started appearing on the market in early 2019. On paper, the thing is amazing: an ESP32 with support for a camera and an SD card, all for less than $10.

Maker Marcin Płomiński and his colleague, who works under the pseudonym “Minco0”, have developed the semi-humanoid robot Axon, which can be produced by anyone using 3D printing. The robot has ...