I cannot power the Arduino Uno by connecting +5v from L298N motor driver to Vin of Arduino (watched videos in YouTube). I have connected 4 dc gear motors of 12v to it. I'm using using 12v battery as power source. Now I could only run my robot by connecting Arduino with pc via USB. How can I power the Arduino without USB and from same supply?
use a buck converter to drop the 12V to 5V. Connect the 5V to the Uno 5V pin to power the Uno and 5V peripherals.
Vin needs more voltage. Connect 5 volt to the 5 volt pin. Maybe there's a strap on the driver board to activate 5 volt out.
The 5 volt voltage regulator on the L298 module, after dropping 12V to 5V (7V) can only supply about 200mA before overheating and either shutting down or burning out. Remove the 5V enable jumper (behind the 3 screw terminal block) and power the Arduino with a 5V buck converter from the 12V supply, connected to the Arduino's 5V pin. The 12V supply must be able to supply current for 4 motors plus another 300mA for the Arduino. The Arduino's VIN pin needs a minimum voltage of at least 7 but not more than 9V.
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