In this episode I will show you in great details how to build this USB load tester. It's very useful, if you're working with USB devices.
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USB load tester schematic: https://i.imgur.com/5jAaCRj.png

Parts list:
USB plug + USB port
double sided perfboard 2cm x 8cm (or bigger)
panel voltmeter/ammeter
2 x push switch
2 x LED (3mm)
2 x 220 ohm resistors for the LEDs
2 x 10W 5ohm load resistors (or 4.7 ohm)
and some wires...

Purchase links:
double sided perfboard: https://goo.gl/DzYgzh
Panel voltmeter/ammeter: https://goo.gl/KVV6h7
push switch: https://goo.gl/JEbUQz
3 mm LED: https://s.click.aliexpress.com/e/_DnB...
220ohm resistors: https://s.click.aliexpress.com/e/_DEf...

Music
Track: Andromedik Firefly [NCS Release]
Music provided by NoCopyrightSounds.
Watch:    • Video  
Free Download / Stream: http://ncs.io/FireflyYO

Track: ÉWN Feels (Original Mix)
Music provided by NoCopyrightSounds.
Watch:    • ÉWN  Feels | Trap | NCS  Copyright ...  
Download this track for FREE: https://www.hive.co/l/2b4qv

Track: Inukshuk The Long Road Home [NCS Release]
Music provided by NoCopyrightSounds.
Listen:    • Inukshuk  The Long Road Home | Futur...  
Free Download / Stream: http://ncs.io/TLRHYO