In the future, I will make a better and more complete water level alarm. In order to increase the conductivity of the water, Cai Yingqin decided to add some ‘condiments’ to the water. After turning on the faucet, I read a book outside and read with gusto. She made a small salt bag out of a small plastic bag and small socks, and filled it with salt into the water level alarm. As a result, the water in the bathtub overflowed.
The water level alarm is ready, how is the effect? Cai Yingqin gave it a try. Cai Yingqin, a fifth-grade student of Fengle Primary School in Pengjiang District, also discovered something from a trivial matter. ‘There are still many imperfections in this water level alarm. After that, cut off the upper part of the plastic bottle, dig a small hole in the middle of the bottle, put the two wires into the hole, and then tie the middle and lower parts with a cowhide band and a ribbon to Bathroom Shower Pvc Hose make a red ‘police line’ ‘, then adjust the height of the wire, the long one stretches to the bottom of the bottle, and the short one just stretches to the ‘police line’. Later, use bows and ribbons to dress up the water level alarm beautifully. I forgot to turn off the faucet. Lu Ban invented the saw after he was cut his hand by thatch..
Cai Yingqin said: ‘One time, I put water on to take a bath.’ Cai Yingqin said. ‘Wow! We made it!’ Suddenly, Cai Yingqin and her mother cheered. She slowly poured water into the water level alarm, and when the water level rose to the ‘police level’, there was a sudden sound of ‘di di di’ music and a red light flashed. All the materials used for
were prepared, and Cai Yingqin began to make it.The apple that Newton fell from the tree discovered the universal gravitation of the earth. She cut the music greeting card first, carefully studied the sound principle of the music greeting card, and carefully connected the two wires. Experience the magic of science and the joy of creation.
I thought, if the bathtub When the water in the water reaches a certain height, an alarm will be automatically issued to remind me that there is too much water, that would be great! ‘ So, Cai Yingqin and her mother went online to search for relevant information and found a plastic bottle. , A music card and a piece of wire, as well as scissors, transparent glue and ribbons and other appliances, hoping to make a water level alarm
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