Hello, I´m a starter and this is my 1. project => I´m trying to build a RC-car control via serial connection, which includes 3 servos + a DC-engine. I´ve already written the software on the Arduino UNO (, by the way) + on the PC and can control the servos fairly well. Today I´ve added the DC-engine control and as i presumed the DC-engine + the servos can´t be controlled together on 1 board without external power supply because when I start the engine, at a certain level of power the Arduino switches off, because the load draws too much. So I´m thinking of an external circuit, which is powered by a 11.1 volts battery pack. I want to control this via transistor with a digital Pin from the Arduino (PWM), so my question is which transistor would you recommend for this job?
thanks so much in advance!!