Hello,
I ordered some more SG90 servo motors for a project, but none of them are turning, and they are also producing a buzzing sound when plugged in. There is not an issue with the code or the circuit which have both been used with the servo motor included in my Arduino kit which works fine. I have the servo powered separately from the board.
I'm not sure what is happening or if it's just a bad batch of motors, but any assistance would be greatly appreciated.
Post a link to the servos and a wiring diagram.
Be sure to power the servos using a separate power supply, capable of at least 1 Ampere per servo, with the grounds connected. 4xAA batteries will work for 1-2 SG90 servos.
Most likely, missing a ground between servo supply and Arduino GND.
[Amazon.com: WWZMDiB SG90 Micro Servo Motor for Arduino Raspberry Pi DIY (6 Pcs) : Toys & Games] (Amazon.com: WWZMDiB SG90 Micro Servo Motor for Arduino Raspberry Pi DIY (6 Pcs) : Toys & Games)
Those are the servos I ordered. I don't really feel like making the schematic. It's powered by a 9V battery which worked fine for the included servo in the kit. It's just the new ones that don't work.
The ground of the board and power supply are connected
I think it something wrong with the motor itself, because I'm using a 9V battery which worked fine for the servo that came in the kit, just not the ones I ordered.
A 9V battery that can only supply about 400 to 500mA connected to a 6V servo that may need 800 to 1200mA to start? Do you have a 4 AA battery holder?
I do not. The 9V battery is connected through the power supply board from the arduino kit if that helps. It works perfectly fine for the SG90 servo that came with the kit, so I don't see why it would be different.
The Arduino 5V output should never be used to power motors or servos, as you can damage the Arduino doing so. The 5V output is designed for low power sensors, displays, etc.
Ignore all the terrible tutorials and YT videos that suggest this is OK.
Use a separate 4.8-6V power supply, capable of 1 Ampere per servo, and your servo problems should go away.
The servo is connected to the separate power supply board which uses a 9V battery. It is not connected to the arduino. This is not the issue.
The 9V battery and power supply probably cannot deliver the required current.
9V batteries are for low power devices like smoke alarms, and if it works at all with a servo, it won't for long.
It is not connected to the arduino
The grounds must be connected. See reply #3 for an example.
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