DIY taxiplane:
Advantages:
Good exercise of children's hands-on and brain-building ability, cultivate children's interest in scientific physics experiments, and improve their creative ability. More...
Features: This series of products combines physical science, energy utilization and spatial thinking perfectly into a multifunctional and visualized educational toy, which is an educational...
Hand power generation: Size 8 * 10 * 11 Rotating the mechanical arm, through the belt pulley, big wheel with small wheel, small wheel with big wheel, do more power to generate current. Working...
Self made course courseware of remote control electric fan There are several kinds of fans, including AC, DC, brushless and brush. The basic principle is the same. This product is a dc3v DC motor,...
Transmitter course courseware The principle of radio receiving and transmitting is that the transmitter sends out current of different frequency and wavelength according to the requirements of...