WHY THIS $4 Aliexpress Product is SUPER USEFUL?

Описание: ☕️🤎Support electronics and my work :https://ko-fi.com/hacktuber
The links below are affiliate links, but that will not affect the normal price. If you buy something I get a few cents towards for buying more gadgets and modules for us to explore and test,thank you.

-USB C PD Type C to 5V 9V 12V 12V 20V 5.5x2.1mm 2.5mm/3.5mm/4.0mm Adjustable Voltages Volt Led Display Step Up Power Supply Cable.
Aliexpress links:https://s.click.aliexpress.com/e/_Evf...
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-KWS-DC28 DC 5.5*2.5 Interface Tester Voltage Ammeter Power Meter TFT HD Digital Display Voltage Meter DC 4~30V 0~12A 5V 12V 24V
Aliexpress links:https://s.click.aliexpress.com/e/_Evn...
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-LED Flexible matrix panel,app control,RC control bluetooth connection with custom text,clock,pattern effects RGB programmable.
Aliexpress link:https://s.click.aliexpress.com/e/_EuW...
https://s.click.aliexpress.com/e/_EQ1...
full video review:   • FLEXIBLE LED MATRIX 16x32 from AliExpress  

-4A/5A 25W/35W Adjustable Electronic Load Tester LED Digital USB Voltmeter Ammeter Battery Capacity Power Supply Detector Monitor
Aliexpress links:https://s.click.aliexpress.com/e/_EHl...
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-Folding Digital Electronic Microscope Autofocus with 8leds 500X Zoom Magnifying 2Inch Screen for Coin Microscopio Windows/Mac.
Aliexpress links:https://s.click.aliexpress.com/e/_EGA...
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