Hi experts my name is Imran mechanical engineer by profession I am working on a machine where I need to drive 10 12VDC MOTORS and one 240v water pump from arduino the problem is at the end of the project I should only have one power supply which I can connect to the wall out let since arduino needs only 5v how should I go about the design my motor ratings are 300ma for load /motor
I basically need on/off with some time from arduino and also need one LCD with switches to be integrated as to input the time for the cycle
The Arduino Uno can be powered with 12V.
But the voltage regulator could get hot. If it gets to hot, you could use a DC-DC converter to lower the voltage to 7V.
So you would only need a 12V Power supply of about 10*300mA = 3A
You could use logic power mosfet to driver the motors, and a relay or solid state relay for the water pump.
If you also need a display and switches, you need a lot of inputs and outputs.
Do you have the Arduino Uno board ? You can use an I/O expander, or shift register.
If you have the Arduino Mega 2560, you have enough output and input pins.
Thanks for reply my biggest concern if I power arduino to the wall wart how can I supply the motors ? As I said I need only one cable for the whole project which I can plug into the wall outlet and it should take care of providing the current seperetely to Arduino motors and pumps .i have good understanding in mechanical engineering but very less in electronics I will be glad if you can show me some schematic where I can achieve the above said scenario I will very thankfull