Hello Geniuses in this video i'm gonna show you How to make a led voltage tester , You Can Make At Home its very Simple
Lantian 1S 3.7V 4.2V 0.4A
LED lamp beads Backlight Tester Tool Smart Fit Voltage for All Size LCD
Hope you enjoy this Simple innovation

If you enjoyed don't forget to leave a like and a comment !and Subscribe to join channel . and enable notifications
   / mextraf  

Previous video
   • Repair broken plastics with DIY plast...  


WARNING!
If you copy anything you see in these videos, you do so entirely at your own risk and thank you .

#The_Bright_Angle
#mextraf
#inventions