# How much power supply do i need for controlling 5 sg90 9g microservo? **URL:** \ **Category:** General Electronics\ **Created:** [November 29, 2022, 3:24am UTC](https://forum.arduino.cc/t/how-much-power-supply-do-i-need-for-controlling-5-sg90-9g-microservo/1059222 "2022-11-29T03:24:04Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![davidchan054](https://avatars.discourse-cdn.com/v4/letter/d/e274bd/32.png) [@davidchan054](https://forum.arduino.cc/u/davidchan054)\ **Post date:** [November 29, 2022, 3:24am UTC](https://forum.arduino.cc/t/how-much-power-supply-do-i-need-for-controlling-5-sg90-9g-microservo/1059222/1 "2022-11-29T03:24:04Z")
Similar to the link below, I am doing a almost identical project. I know some user suggested a power brick but I prefer something more portable. I am looking to use seeeduino instead which has a 3.3 V limitation but the servo shouldn't affect the microcontroller. I plan to have 2 separate power supply, a lithium power around 3.3 power the seeed. While I think a 4x AA battery pack should be sufficient to power the servo? Would my assumption be correct? > [@how much power supply do i need for controlling 5 sg90 9g microservo ??](https://forum.arduino.cc/t/how-much-power-supply-do-i-need-for-controlling-5-sg90-9g-microservo/627666/15): > > wvmarle: The built-in LED is powered by pin 13, so as long as pin 13 is an INPUT it won't shine. If interference makes it shine, that interference is probably strong enough to make the rest of the Arduino shine in the same colour. If you refer to the Google drive links given, you will see that he is in fact using a (genuine!) UNO. Pin 13 set as an INPUT and not connected to anything will result in the LED shining or flickering at random. wvmarle: Pin 13 used as servo output will make it s… ---
**Author:** ![J-M-L](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/j-m-l/32/766245_2.png) [@J-M-L](https://forum.arduino.cc/u/J-M-L)\ **Post date:** [November 29, 2022, 3:53am UTC](https://forum.arduino.cc/t/how-much-power-supply-do-i-need-for-controlling-5-sg90-9g-microservo/1059222/2 "2022-11-29T03:53:49Z")
> [@davidchan054](#): > > While I think a 4x AA battery pack should be sufficient to power the servo? Would my assumption be correct? Those servo at 6V draw probably 250mA each, so you are looking at 1.25A drawn from your 4AA pack. Can it provide that and for how long is the question you need to ask yourself (depends on your AA) ---
**Author:** ![anon94801460](https://avatars.discourse-cdn.com/v4/letter/a/278dde/32.png) [@anon94801460](https://forum.arduino.cc/u/anon94801460)\ **Post date:** [November 29, 2022, 5:25am UTC](https://forum.arduino.cc/t/how-much-power-supply-do-i-need-for-controlling-5-sg90-9g-microservo/1059222/3 "2022-11-29T05:25:23Z")
> [@davidchan054](#): > > a 4x AA battery pack should be sufficient to power the servo? Probably not, unless you use high current NiMH batteries. The start/stall current of the SG-90 is 0.7 to 0.8 Amperes, so plan on 5-6V at 4A for 5 servos, minimum. If you try to get away with significantly less current, you will probably end up with a twitching mass of servos. ---
**Author:** ![madmark2150](https://avatars.discourse-cdn.com/v4/letter/m/b487fb/32.png) [@madmark2150](https://forum.arduino.cc/u/madmark2150)\ **Post date:** [November 29, 2022, 8:56am UTC](https://forum.arduino.cc/t/how-much-power-supply-do-i-need-for-controlling-5-sg90-9g-microservo/1059222/4 "2022-11-29T08:56:55Z")
Or any one servo can move, but only one at a time. ---
**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\ **Post date:** [May 28, 2023, 8:57am UTC](https://forum.arduino.cc/t/how-much-power-supply-do-i-need-for-controlling-5-sg90-9g-microservo/1059222/5 "2023-05-28T08:57:40Z")
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