USB Charging Troubleshooter
thingiverse
Diagnose and fix annoying USB device charging problems by building your own USB Troubleshooter. "My phone is not charging properly - is it the USB cable, charger or device?" It is often very frustrating trying to identify the real problem with USB device charging problems. Quickly monitor the USB charging voltage and current by plugging in line with your cable and charger to identify what's going on. Build instructions can be found here https://www.instructables.com/USB-Charging-Troubleshooter/ Example of fast charging here https://youtu.be/8pHHboOflPY
With this file you will be able to print USB Charging Troubleshooter with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on USB Charging Troubleshooter.