Editor's note: The original author of this article is a netizen named "Clouds Scatter in the Sky without Traces", published on 。

Big Cat (ZTE Grand Memo ）You can think of how to use the big screen except for using a hand poke? Yes, you guessed right - touch-screen pen.

Do you envy talented people for drawing with a stylus? Do you want to have an original stylus that can draw? Now, this is about to happen! Dishes DIY handwriting pen, original price 999 yuan, now only 0 yuan!! Real zero cost, real second kill! What are you waiting for? Pick up your scissors and let those expensive original touch pens die!

Chairman Mao taught us that "no money is the absolute truth!"

Note: If you are very rich, please stop reading the original stylus that is very expensive. This post is for my brothers and sisters who are unwilling to buy the original stylus

1 Tools and materials

● A pair of scissors/knife (sharp or not)

● One fresh-keeping bag (it can also contain garbage after use)

● A ball of absorbent cotton (or a napkin, toilet paper, straw paper, newspaper, sponge, cotton wool in the quilt...)

● One copper wire (I extracted it from the abandoned network cable)

● A roll of transparent tape

● A waste plastic pen (I didn't find an iron pen, and I was too lazy to go to the stationery store to buy a new one. Chairman Mao taught us that waste is a crime)

Material cost: 0 yuan

2 Peeling of copper wire

You can use a knife to cut it bit by bit. Of course, you can burn it with fire, heat it in sections, heat it with a lighter for 2 seconds, and pull out the insulation skin with your fingernails. (Those who use a knife and fire should pay attention to safety!)

Before processing

After processing

3 Make contact

● Cut a small piece of 4X4CM square from the garbage bag. It is better not to tear it apart. Direct 2 layers. (I don't know whether it is the bag. I tried 6 layers and 4 layers successively, and finally found that the effect of 2 layers was OK)

● Take a small ball of cotton, wet it with salt water, squeeze the water into a ball, and bind it with copper wire for standby.

● Wrap the cotton ball tied with copper wire with a fresh-keeping bag, compact it after wrapping (this step is more important, do not press too small to affect the contact area, and do not too loose to affect the feel), and bind it with transparent glue.

4 Making the pen body

● Cut off one end of the tip of the old plastic pen and pass through the copper wire. Tension. The head shall be handled carefully and compacted. Do not loosen. The extra copper wire at the tail wraps a spiral wire on the pen holder as a conductive contact point.

The final appearance is like this

5 Try (please ignore the ugly words of the building owner)

6 Finished products

7 Finally, say a few words

1. The pen with the iron pen tube must work well. I hope that qualified students can try it. Don't buy a new pen to dismantle it. That doesn't conform to our DIY spirit of turning waste into treasure. Don't dismantle your father's hero pen..

2. You can consider using other materials as contacts. Consider using resin or conductive rubber, or plasticine, or orange peel... Steamed Rice... Glass glue+iron powder.. The landlord has been using kumquat for some time, and the effect is strong!!!

Editor's Note: Before Love to play computer games Also in《 Science popularization: capacitive screen touch principle 》And《 Love tossing and turning: love playing computer to teach you how to DIY capacitive screen gloves 》In the two articles, the principle of the capacitive screen and how to make similar DIY equipment are analyzed. In fact, the key point is to make the micro charge on the surface of the capacitive screen can be transmitted to the hand through the conductor. The author has also given a lot of contact materials. As long as you try more, you should also find a better plan and make more interesting DIY works.

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