Multiple USB packs flash, and shut off, when connecting power to Arduino project

Greetings, I have 3D printed a rotating platform device. It consists of an Arduino Uno, a buck boost convertor, and a micro servo. The connections are straight forward. 5V from the battery pack straight into the Arduino (Vin) and buck boost convertor. The buck booster convertor is there encase I want to run a small 12v light or something else. But currently, it is not powering anything.

For 3 out of the 5 USB battery packs tested, they flash and shut off when I plug in the USB to power the device I made.

Packs that work: Norsk Shantelier Aibocn Power Bank

Packs that don't work: myCharge RazorMega RZ20KK The other two are generic and not labelled. Purchased from overseas.

I've made two of these devices and shipped them out to friends for testing. I currently building the third so I can test more myself. They have tried charging their phone from the battery pack. Then inserting the USB to power the device in another USB slot on the pack, but it shuts off the same as described before. There must be some protection or surge occurring to trip these certain battery packs.

Anyone have any ideas for a potential solution? -Thank you

Correction: The servo + & - are connected to the battery. Only signal goes to the Arduino. Imagine the battery pack is the USB battery packs explained above. |500x254

5V from the battery pack straight into the Arduino (Vin)

Vin goes straight to the onboard 5V regulator. The on board 5V regulator needs at least 7V to regulate properly. Although it may not be your problem, it is a problem. Connect 5V to the 5V pin.

Your textual circuit description is not clear, to me. A schematic diagram showing all parts and power supplies would be more clear.

groundFungus: Vin goes straight to the onboard 5V regulator. The on board 5V regulator needs at least 7V to regulate properly. Although it may not be your problem, it is a problem. Connect 5V to the 5V pin.

Your textual circuit description is not clear, to me. A schematic diagram showing all parts and power supplies would be more clear.

Will do. Updated the OP to add the wiring. Like I said, it's simple and basic.

It is much better practice to power the servo straight from the battery pack than to power the servo from the Arduino 5V regulator. The 5V regulator may power 1 unloaded small servo, but put a load on the servo and the 5V regulator is likely to overheat and shut down.

Supplying the Arduino from the battery pack and USB at the same time can cause problems. I would not do it. You could power the servo and other peripherals from the battery pack and the Arduino from USB. Connect the battery pack to the 5V rail of the bread board and disconnect the 5V out of the Arduino from the breadboard. Connect the battery pack to the ground rail of the bread board and the ground of the Arduino to the breadboard ground. That makes the 2 supplies independent (except for ground).

Crudely modified OP image. Squiggly black lines mean remove that wire.

groundFungus: It is much better practice to power the servo straight from the battery pack than to power the servo from the Arduino 5V regulator. The 5V regulator may power 1 unloaded small servo, but put a load on the servo and the 5V regulator is likely to overheat and shut down.

Supplying the Arduino from the battery pack and USB at the same time can cause problems. I would not do it. You could power the servo and other peripherals from the battery pack and the Arduino from USB. Connect the battery pack to the 5V rail of the bread board and disconnect the 5V out of the Arduino from the breadboard. Connect the battery pack to the ground rail of the bread board and the ground of the Arduino to the breadboard ground. That makes the 2 supplies independent (except for ground).

I appreciate your assistance. But you've taken the image too literal. That is all drag and drop, done in 5 minutes. The servo is connected to the battery. I'm not using a battery and the USB at the same time despite it being in the image.

But you've taken the image too literal. That is all drag and drop,

If you can't spend time to draw an accurate diagram, why should we try to guess what you're doing?

This forum's users are so counterproductive... Please close this thread and ban my IP. When I try to ask another question a year from now the block will allow me to remember this moment and the rest.

Moderator edit: language

dev_deque: Please close this thread...

No.

dev_deque: ...and ban my IP.

No.

But a short timeout for language is in order.