3

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

16
  • 1
    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
    Commented Jul 24, 2019 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
    Commented Jul 24, 2019 at 1:17
  • 1
    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
    Commented Jul 24, 2019 at 1:23
  • Yes, that was great tutorial! Thank you so much! There were used 4 batteries is it enough? Because the sensors and other details in my project a little more. I am sorry for asking again
    – Dias-77
    Commented Jul 24, 2019 at 1:42
  • 1
    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
    Commented Jul 24, 2019 at 2:30

1 Answer 1

2

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.

5
  • 1
    You can also use 9Volts too for your CarPi Commented Oct 29, 2019 at 10:47
  • 1
    Donnobath, Sohan
    – Dias-77
    Commented Oct 30, 2019 at 0:07
  • you from bangladesh? @Dias-77 Commented Oct 30, 2019 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 Commented Oct 30, 2019 at 4:35
  • 1
    No, I am not. I have Bangladeshian friends.
    – Dias-77
    Commented Oct 30, 2019 at 4:58

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.