I purchased the Douk VU2 meter and sent it to
@amirm to review. It turns out it wasn't very good, and was returned to the store I got it from.
I still wanted some moving meters though, so I thought I would see what I could do. I purchased a control PCB from Amazon that came with nasty meters (
https://smile.amazon.com/gp/product/B07SFHV85Y/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1), some nice meters from eBay, and the important part, the input selector from
@tomchr at Neurochrome (
https://neurochrome.com/collections/buffers-preamps/products/input-selector).
I've now built everything up and done some testing using a MOTU M2 with ARTA.
These are basic tests done on my workbench. This is my first time testing like this and I'm not an EE.
I'll start with a loopback test, just to set a baseline.
Next is just the input selector (no power or input to VU meter PCB).
Added power to the VU PCB
And then plugged in the VU meter to the PCB
Finally, changed to input 2. I think the bump at 60Hz is my fault (this is all on my desk top, and not grounded in anyway).
For the investment I'm pretty happy with the results and will be building this into a nicer case.