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...
Objective course: learning physical circuit diagram Double control switch: it can have two switches to control lamps and other electrical appliances For example, turn on the switch downstairs...
It is composed of tank, carriage, battery, driving belt, pulley, driving mechanism.
After the power is turned on, the power wheels on both sides of the deceleration motor output power and drive the...
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...