Hi, may I know why my power source( 5v powerbank) being cut off after few seconds my system being switch on?
Basically the components that I used is on/off switch, 4 buttons, LCD screen, arduino, ultrasonic sensor, and 5v LED strips
Probably too little current draw, power bank auto switch off.
Try with another power bank.
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What does this have to do with the IDE.
The description for the IDE 1.x section of the forum:
Topic moved.
Hi, @farahm_43
Are your strips being powered by the same powerbank?
What are the specs of your powerbank?
How long/how many LEDS in each strip?
What is the total current consumption of your circuit?
Can you please post a copy of your circuit, a picture of a hand drawn circuit in jpg, png?
Hand drawn and photographed is perfectly acceptable.
Please include ALL hardware, power supplies, component names and pin labels.
Can you post some images of your project?
So we can see your component layout.
Thanks.. Tom.. 
I've tried 3 different powerbank already and same things happened. I've tried those power bank to my friend system which much more simpler (have finger print and ultrasonic sensor only) and yups it doesn't cut off on its own.
It was just a quick guess..
So the problem can be opposite, too much current drawn.
Is it turning off when powered from other power source?
yup the LED strips connected to the arduino at pin 9
each strip have around 25 LED
Total current consumption I'm not sure. How to measure/ calculate it? As what I know arduino can consume 5v only and all of my components only require 5v power supply
Actualy I have 12v rechargable battery but when I connect it my LCD screen does light up but it did not display anything so my system is not working but then when connected to laptop through usb the system works fine
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If connected to laptop through USB it works fine.
For my previous project I've used 9v battery but it cannot last long so that's why I'm not using it since this usually will gives problem to me during exhibition day as I've to demo for many times so 9v battery cannot be use.
I've also tried to connect to 12v rechargable battery but my LCD screen just light up but not displaying which causes others not functioning too
That's good start point.
So if you disconnect the leds, everything else works ok with powerbank?
What kind of led strip?
All led strips completely disconnected?
Are you using same usb cable that you used with laptop?
yes
And you don't power anything in your setup from another power source (like laptop)?
I mean, leds are disconnected and there is only arduino with sonic sensor powered from powerbank in your circuit?
yes and there's also buttons as well as lcd screen. That's all
Getting weird...
You still have that other powerbank to try (always leds disconnected) ?
I've tried other power bank and it lasts longer but it still cut off halfway
Halfway of what?
I mean it can last few seconds longer than the previous power bank
I don't know what to say. I would estimate arduino+lcd+sonic to draw 50-100mA, that should not be too much for any powerbank (if charged).
Back to my very first answer.. Did you ever try with leds on?
means? try connect powerbank with led only?