Current flow controller for DC Motors

[mikebar]

mike,

This is for reference.

You can play with the values and come up with the right ones much faster then using formulas.

---------OR------------
You can use analog reading to speed up and down the motor for the time you need.
You need a resistor for detecting motor current anyway.

If your analog reading is high, then slow down the motor, and if low then speed up the motor.
You just do it for 2 seconds as you need.

Thank you for the answer.
Analog reading is what I will do if it is not possible (or reasonable/reliable) to do the same without disturb a PIC chip for this task.
To drive the motor, I have in mind to use the logic type mosfet RFP30N06LE for this kind of application. Do you think it is a good choice?
I thought that a fast recovery diode for this kind of application (if memory is still good) should be a BYV28-200. Do you think is a good choice too or you have some better idea?

Thanks in advance.