Super cool "Zi" water gun

Technology "nourishes" water gun

When I was shopping on Taobao, I saw the water mist pump disassembly accessories and found that it was a good thing that can be used to modify the water gun.

The main structure is to add a pipe in front of the water mist pump as a water storage space for launching. The water can be sprayed out using the pressure of the water mist pump.

A syringe was modified with a screw motor. A 10ml syringe was added to a 100mm N20 screw motor with a speed of 600, and a 75mm sliding potentiometer was added to form a quantitatively controllable syringe.

The principle of the program is very simple. After pressing the trigger - the screw motor advances - the water pump motor runs.

The program was later modified: press the trigger - the water pump motor starts firing - and finally the screw motor withdraws to prepare for the next launch.

The display can directly feedback the remaining water volume in the water tank (syringe)

You can watch the video directly for the final effect and specific details: https://www.ixigua.com/7134329268535820830

What makes the project more uncomfortable is that recently Hezhou officials seem to not sell the esp32c3 development board. It is probably because they sold too much in 9.9 before, and they really can’t bear it anymore, haha.

Today I saw that the C3 development board has started to sell for 9 yuan and 9 yuan, so hurry up and stock up on some.

However, the schematic diagram is very simple and can be used with other development boards with slight modifications. In theory, there is no problem with esp8266.