USB TTL 9V Stepdown Voltmeter Male Multi Module DIY Gadget

For a number of DIY Projects for me the suitable power sources have been missing .
I solved this problem with the self-made multi-module .

It provides the continuous control of voltage via USB or 9V.

Are required :
9V battery clip

jumper cable

USB TTL module

Step Down Module

voltmeter

Simply solder everything together according to wiring diagram , except the USB TTL module . It can be connected via female jumper cable .

After a few minutes you will have a beautiful , lasting working multi module with which you can infinitely adjust the USB or 9V battery power. Perfect for small test applications and the like.

A german version of this instructable can be found here / Eine deutsche Version der Anleitung finden Sie hier:

https://www.instructables.com/id/USB-TTL-9V-Stepdown-Voltmeter-Male-Multi-Modul-DIY/