Materials and tools: adhesive tape, scissors, aluminum foil paper, cotton swabs, tin foil, ballpoint pen.

1. Prepare materials in advance: adhesive tape, scissors, aluminum foil, cotton swabs, tinfoil and ballpoint pens.

2. Take out the refill of the ballpoint pen, leaving only the pen holder for use.

3. Cut off the cotton-covered part of the cotton swab head.

4. Insert the cotton swab head into the pen, leave the cotton swab head outside and tighten the pen.

5. Wrap the tin foil on the pen holder and tighten the tin foil to keep the pen holder straight.

6. Fix with adhesive tape.

7. The pen holder is tightly wrapped with aluminum foil.

8. Tie the joint tightly with adhesive tape. The homemade stylus is finished.

Stylus type:

The principle of stylus is to locate by infrared ray and ultrasonic wave. When the tip of the stylus is pressed, it will emit ultrasonic waves and infrared rays, because there is a transmitter at the upper end of the stylus.

1, resistive stylus

The resistive touch screen mainly realizes the operation and control of the screen content through the principle of pressure sensing, so the resistive stylus only needs to ensure that it can provide enough pressure, and most ordinary stylus can also meet the requirements.

2, capacitive touch screen pen

Capacitive touch screen technology works by using human body's current induction, so capacitive stylus must be made of conductive materials and have conductive characteristics. When the stylus touches the capacitive touch screen, the human body will form a coupling capacitance between the stylus and the surface of the touch screen.