This is a project to control a DC pump with PWM on Raspberry pi. The repositroy includes a design about a motor driver curcuit, control programs, pump.

• Raspberry pi 3
• ubuntu Mate16.04
• Python 3.x
• wiringpi
• DC pump

We used this DC pump.

• Model number:DC30A-1230
• Voltage:DC5V-12V
• Rated current:0.35A
• Max Volumetric flow rate:4L/min
• Rated power consumption:4.2W

• Breadboard
• Photo coupler:EL817
• N-channel MOSFET:IRF840
• Resistors:150 ohm, 1k ohm, 1k ohm
• wire

See here written about PCF8591. And do not forget to enable i2c of raspi

$ python3 flowdemo.py

we didn't use PWM of wiringpi, because it conflict the program using PCF8591. so that we made cheap software PWM program.

MIT

• embedded

ShuDiamonds