Discover it... 3D printer. 3D printing is the construction of a three-dimensional object from a CAD model or a digital 3D model. Arduino or/and ESP. No, not extrasensory perception but a microcontroller like the ESP8266. or an Arduino microcontroller. On charge... The lithium ion battery is easy to charge but charging safely is more difficult. The basic algorithm is to charge at constant current. LED drivers. LED drivers, or LED power supplies, provide LED light bulbs with the electricity they require to function and perform at their best. IAD. An appliance with remote monitoring and management capabilities. Video. Different videos. From Barribot to how to make a picture with a dog! ....