Black-box vv-mod by JJ

[jyjarvi]

Hello from JJ´s workshop
This is one of my earliest mod i make.

Parts i used:
- PTN04050 step-up circuit
- Blue voltage-display
- 5A horn-Switch
- 100k single turn potentiometer
- Trustfire 2x14500 battery
- Black shortened aluminium box

- JJ

here is some pictures

 

[Kay1959]

Very nice! Welcome to ECF!

 

[Justin66]

Cool! The meter on top (and in blue) is a nice touch, as well.