![]() ![]() I solved this problem by making an external power supply for my servo motor. Servo Motor Power Supply Circuit Diagram: Let’s have a look at the circuit diagram. This schematic is designed in cadsoft eagle 9.1.0 version. If you want to learn how to make a schematic and PCB then watch my tutorial. J1 is the dc female power jack this is where you connect your 12v adaptor or a battery. ![]() This voltage should be greater than 6 volts and less than the max input voltage of 7805 voltage regulator the recommended voltages are 9 to 18 volts. A 25v 470 UF capacitor is connected between the output and ground pins. The output of the voltage regulator is connected with the supply wire of the servo motor. The ground wire of the servo motor is connected with the regulator ground and also with the Arduino’s ground. While the signal wire is connected with the Arduino’s pin number 3. ![]() This is the final circuit the components are soldered as per the circuit diagram. The supply wire of the servo motor, which is the red wire, is connected with the output leg of the 7805 voltage regulator, and the brown wire which is the ground wire is connected with the middle leg of the 7805 voltage regulator and a 470UF capacitor is connected between the output and ground. This is the ground wire and should be connected with the Arduino’s ground. The yellow wire is the signal wire and it can be connected with any PWM pin of the Arduino, in my case I will connect this with pin number 3 of the Arduino. ![]()
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