Muses Volume

[rredline]

Can you use MUSES72323? It has much lower THD+N.

 

[meldano]

Hi,
I already use the 72323 in my new design

 

[sunlai]

Features list for v2.0

• Mech. compatible to v1
• modern mcu (stm32)
• Infrared learning capabilities
• 0..-111,75dB in steps of 0,25/0,5/1/2dB
• Mute function
• Individually adjustable user parameter (volume step size, startup volume, balance, no. of input channels…)
• Balance
• +/-10…18V voltage supply
• 2,4,6,8 volume channels possible because volume boards can be cascaded
• optional 1..4 input channel
• optional analog potentiometer to adjust volume
• reduce distortion from mcu with deep sleep mode

2/3 of features are ready/tested. Documentation is “on the way”

I think I need around 2 month to complete the firmware. After that I will order a couple of boards.

I have only 5 kits of version 1 (for a special price) left.

I will be waiting impatiently and I hope to see it.
PS.
If I don't get vaccinated.

 

[meldano]

I am working hard in it
Basic implementation done ✅
Next steps: optional input select, documentation, some layout improvements, optional mainboard with psu and relay input selector.

Easiest way: subscribe

 

[amsoque]

Why no more than 4 inputs? MCU limitations?

 

[meldano]

No.
Do you need more ? Why ?
Today user need one digital and one analog source.
If I implement 6 Inputs someone need 7 ...

 

[wayne]

If you make 7 then someone wants 8!
The new chip has better specs but they are already so good it is hard to measure the improvement in circuit.
Nice work.

 

[meldano]

Thanks!
The biggest improvement is the new controller/firmware with many features to make these tiny thing smart.

 

[astromo]

Fantastic ... lots of future fun to go round. Sounds like there could be some lovely audio Easter eggs to crack come April.

 

[meldano]

Pre Release:
Microsoft OneDrive - Access files anywhere. Create docs with free Office Online.

 

[ClaudeG]

Great work Meldano!

What is the projected price for these volume controls? What will be built / included? Is the programming already done?

I must confess a display option would have made the setting up much easier, but also to know where one stands re volume setting

A few notes on the excellent paper:
- The remote to use is unclear, but my understanding is it can't be a simple one as at least numbers are needed up to 9
- On my computer titles from 3. on appear at the end of a page, instead of being on the next page
- 3.1 title has a small typo with a double T

MFG

Claude

 

[meldano]

Hi Claude,

Thanks!

I thik, I will organize a group buy.
The price depends on pcb amount.

I already have a "big" solution with grafic oled and thousend other features.
The goal for project is a small, universal and smart device.

For normal control (vol up/down, input up/down, mute) you can use a small and simple remote control.
To setup the parameter you have to use any other remote from your TV or AVR.

The documentation is only a raw version to show the way

Daniel

 

[nautibuoy]

I bought some PCBs in a previous GB but they're still sitting in my desk drawer as I've been deterred by the smd soldering; I could manage it with a template to apply solder paste and then use an oven or hot-air station but not hand/eye soldering - age! For a chip amp project I'm working on I decided to get an Academy Audio module instead.

I'm sure others must be in a similar situation - is there any possibility of offering assembled versions of the new boards?

 

[meldano]

Hi,
primary there will only be an option for unsoldered pcb´s and programmed controllers.

Today I ordered the Mainboards

 

[cartman]

I'm ready to buy one XLR (symmetric) and SE (RCA) kits with the all parts - including OLED display and learning IR function.
Please prepare the KIT for better (external) regulartors like LT30xx or TPS7A series too.

 

[meldano]

Sorry, this project is without a display.
I use standard 7815/7915 Pinout, you can use a NewClassD/Belleson/LT30xx/TPS7A Regulator Board

 

[cartman]

Sorry, this project is without a display.
I use standard 7815/7915 Pinout, you can use a NewClassD/Belleson/LT30xx/TPS7A Regulator Board

There's no any displaying volume level?

 

[thimios]

I bought some PCBs in a previous GB but they're still sitting in my desk drawer as I've been deterred by the smd soldering; I could manage it with a template to apply solder paste and then use an oven or hot-air station but not hand/eye soldering - age! For a chip amp project I'm working on I decided to get an Academy Audio module instead.

I'm sure others must be in a similar situation - is there any possibility of offering assembled versions of the new boards?

Send your pcb and parts to me and i can resend ready and tested.
No benefit.

 

[ClaudeG]

Danke Daniel

MFG

Claude

 

[nautibuoy]

That's very kind of you thimios, thank you. Next time I put in a parts order I'll include the required parts.