The main body of the air pump on Taobao for 20 yuan has a sensor of DSH700 and a digital-to-analog module of CS1237. The air pressure value is read through esp32 for inflation control.
It is worth buying. A master shared the production process and the arduino code. Thanks to the master
https://zhiyou.smzdm.com/member/4580489080/
. Use esp32 to control inflation. The average of the current collected data cannot be very good. The accurate value can only be calculated according to the specific value.
The maximum pressure value of the sensor is 6bar.
Please refer to various conversion methods. The value calculated using this method is relatively close to other air pumps.
1psi=6.895kPa=0.0689476bar
Program address: https://gitee.com/muyan3000/airpump
Finally finished the interface and program 20220109
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