surepic:
Now i need to switch whole circuit from 3.3v 20ma gpio. Current consumption for the circuit with motor is approximately 550ma-560ma 5v.Any suggestions what transistor/mosfet to use?
When you say 550mA-560mA, are you talking average current, peak current, or ???
And, when you say "motor", are you still talking about a Servo, or is it an actual morot? And if so, what kind of motor? Typical brushes included DC motor, or something more exotic?
And will there be any PWM involved? Or, is it just a strait ON for awhile, OFF for awhile?
And, I guess the ultimate, qualifying question is: when you say "whole circuit", do you mean that same circuit, but controlled from a 3.3V port, rather than a 5.0V port. And, will the rest of the "whole circuit" be powered at 5V? In which case, is this a question of voltage translation?
Why am I confused? Because there are two opposing hints:
- "whole circuit" might imply, "original circuit"
- yet, "what transistor/mosfet to use" implies a disregard for the "circuitry" that comes before the transistor/mosfet.
In other words, are we disregarding that apparent settled upon circuitry, or is this a question about how to drive the settled upon circuitry? Or, is this a whole new question?