I am just beginner, so perhaps this question is not correct. I am going to build a robot car, and I am going to power it by using powerbank. My question is : is it enough for robot at all? I mean, is it enough to connect by usb only raspberry pi, and others as motor drive will get power from raspberry (+ raspberry vamera module v2)? If it is enough what is the maximum limit of it`s power? It is my first project, so i am worrying to burn it. Thank You too much in advanve!

I meant powerbanks like this: https://www.amazon.co.jp/s?k=power+bank&__mk_ja_JP=%E3%82%AB%E3%82%BF%E3%82%AB%E3%83%8A&ref=nb_sb_noss

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    Yes, you should power the motors using external power, from a 3V to 6V battery/power bank. The following posts might help. (1) raspberrypi.stackexchange.com/questions/96515/… (2) raspberrypi.stackexchange.com/questions/99460/motor-wont-stop (3) raspberrypi.stackexchange.com/questions/98513/… – tlfong01 Jul 24 '19 at 1:02
  • Thank you for prompt reply and helpful links! I read that 9V battery could burn raspberry, and to be honest i am going to use powerbank to protect it. – Dias-77 Jul 24 '19 at 1:17
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    Yes, even 5V power connected to a Rpi GPIO pin would fry the Rpi. The "Build a buddy" tutorial mentioned in my links are good for newbies to get started. Using L298N driver and 3V to 4.5V battery pack is good. – tlfong01 Jul 24 '19 at 1:23
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    You are welcome. I am an electronics toys hobbyist. When I was young, I earned a living as a technician in a toy factory, making toy cars and even tanks. – tlfong01 Jul 24 '19 at 2:24
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    Ah, that is another thing. I do use Lipo 3.7V x 3 = 11.1V. Then I use DC/DC adjustable voltage regulator module to step down 11/12V to 3V to 6V for DC motors and toy servos. The regulators usually has current limiting, say 500mA up to 3V, usually. So it is safer than to use battery packs which do not have current limiting or short circuit protection. – tlfong01 Jul 24 '19 at 2:30

Power bank is a poor choice for raspberry pi. It will work but I don't think it will work that fine. You have to make something that gives you 5V 3A power. Here is how you can make one, 1. 12V lipo battery 2. UBEC/BEC(5V-3A)

With these two you can do both of your things(car+pi) BEC is the important part here. This is the part that converts 12 V to 5V with 3A.

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    You can also use 9Volts too for your CarPi – Sohan Arafat Oct 29 '19 at 10:47
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    Donnobath, Sohan – Dias-77 Oct 30 '19 at 0:07
  • you from bangladesh? @Dias-77 – Sohan Arafat Oct 30 '19 at 4:33
  • Don't forget to select if it worked. If you are in bangladesh you can have the product from www.facebook.com/shohanlab @Dias-77 – Sohan Arafat Oct 30 '19 at 4:35
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    No, I am not. I have Bangladeshian friends. – Dias-77 Oct 30 '19 at 4:58

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