Traditional bamboo manual method

1. Screen: Arts and crafts: scissors, crayons, bamboo (bamboo strips are enough), scotch tape, art knife, pencil, etc.

A: Cut the bamboo into two toothpick-thick bamboo strips, and then cut them off by 8CM. * * * Need five bamboo sticks. Of course, for screens, the length and number of bamboo strips can be increased.

B: Find some colored cardboard, such as a calendar with landscape paintings. Of course, you can also draw it yourself. It takes four pieces to cut a rectangular strip (strip) with a length of 7CM and a width of 3CM.

C: Splice four bamboo sticks with five bamboo sticks, add one between two bamboo sticks, and use transparent tape.

D: Fold the semi-finished products along the junction of bamboo strips and painting strips to make the screen look like a folding fan, then leave it like this for a few minutes, and then open it, then a three-dimensional screen is completed, and you can also write some famous sayings and aphorisms on it! Very good handicrafts!

2. Simple fan physics plus art plus production: a jar, a pair of scissors, a tinplate, a batten, a four-wheel drive motor, a bottle of super glue, and some colored LED bulbs (or bulbs and diodes).

Answer: Cut off the upper half of the tank by scissors about 1cm, and keep the remaining tank, that is, first make a "cup", then draw three pieces on the cup at equal intervals, then keep these three pieces, cut off the rest, and then present a circular base with three blades, like a propeller, and then drill a round hole slightly smaller than the motor shaft in the middle of the base with scissors tips.

B: There is a tinplate (that is, an ordinary piece of iron) that wraps the motor tightly and then nails it to the batten.

C: Fix the blade on the central shaft of the motor with super glue to ensure the vertical, horizontal and windward performance of the blade.

D: Connect the two wires of the motor to the LED bulb, and ensure that the wire interfaces are connected normally (positive and negative, with good contact).

E: Run forward with a stick in hand, or put it on a bike. Under the action of wind power, the blades are driven to rotate, and then the motor rotor is driven to rotate. As a result, magnetoelectricity is generated, and the LED light bulb lights up. If the wind is steady, it is no different from a battery. If the wind is fluctuating, the LED bulb will light up and go out. If you add a sensitive charger, you can store the current and then release it, which will be ideal.