i used arduino to control one toy motor with L298N, the motor only want 3-5V voltage . I just have a AC/DC adaptor which can output 9v 1A ,So i used it to supply the arduino and L298N. because the motor is small ,i used a 78L05 to get 5v for L298n Pin4 and connect the adaptor output directly to arduino external powerin . but the arduino seem not to work and blink and the outpin (should high) have no result. After five or later minutes, it work and not blink. i think maybe the adaptor not provide enough current for arduino,but the adaptor output is 1A and 9v , is not enough to driver a small motor and arduino??
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