หัวข้อ: Back light knobs

[ก.ไก่]

That'great.

[Frank R.]

Wow!! So cool panel. Where you bought this light strip?

I bought the LED filament strip from Shopee, I guess, Lazada also will have.

[Diy Project Seeker ©]

Very good idea.  Your preamp looks amazing.  Thanks for sharing the idea.   

[Mr. Tube]

Wow!! So cool panel. Where you bought this light strip?

[Frank R.]

Here is my new M7 pre amp with the back light knobs.

[Frank R.]

Here I to show my idea for my back light knobs.
I found, that LED filament strips are great for use on back light knobs.
I bought 130 mm long filaments, for use on 40 mm diameters.
The filaments are running on 3 volt DC.
But, 3 volt is much to bright.
So I use an adjustable power supply, to set the right brightness!