Maya R2R Advanced Volume controller - diyAudio
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Old 6th April 2016, 10:52 AM   #1
tvicol is offline tvicol  Romania
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Default Maya R2R Advanced Volume controller

I still get emails from people interested in Maya, so here we go. Same prices as on the first GB.

Features:
- R-2R 64 1dB step attenuation
- Android client for bluetooth remote control - BluThor apk
- infrared remote RC5 protocol with autolearning
- infrared remote NEC protocol for Apple remote (default)
- OLED display
- 4 selectable inputs
- independent volume control for each input - very good for A-B source comparison
- extra low noise ground separation between digital and analog circuitry
- inrush current protection
- soft start with speaker protection
- soft turn off with speaker protection
- plate voltage delay for tube pre/amplifiers
- temperature display and monitoring
- temperature protection
- serial I2C bus for unlimited channel extension
- easy direct control and setup with precision optical encoder

Current firmware version is 0.9

More detailed information about Maya is available at vicol audio : MAYA - your ultimate volume-controller
An implementation from first GB Interest check on Vicol Audio Maya R2R Volume controller

Please register here https://docs.google.com/spreadsheets...it?usp=sharing

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Regards,
Tibi
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Last edited by tvicol; 8th July 2016 at 05:50 PM.
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Old 6th April 2016, 04:44 PM   #2
aradan is offline aradan  Singapore
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HI Tibi, I am thinking about the digital crossover version 6 way. As I have already got a balanced version can I order an extra stereo board only?

And another question, can the balanced board be used as 2x stereo?

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Old 6th April 2016, 04:50 PM   #3
tvicol is offline tvicol  Romania
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aradan,

Yes on both questions.

Regards,
Tibi
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Old 6th April 2016, 04:54 PM   #4
aradan is offline aradan  Singapore
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Thank you!

Added

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Old 12th April 2016, 11:18 PM   #5
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What is the time frame on this?
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Old 13th April 2016, 07:26 AM   #6
tvicol is offline tvicol  Romania
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Quote:
Originally Posted by buzzforb View Post
What is the time frame on this?
I'll keep it open for entire April.
10 units are ready for shipping, more units will be available in May.

Regards,
Tibi
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Old 24th April 2016, 01:35 AM   #7
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Default Bruno Putzeys Balanced Preamp

Hi Tibi,

I've seen some discussion about using your volume controller for Bruno Putzeys Balanced Preamp which I'm very interested. Will this be the thing I should be buying or it wouldn't work without some serious modification to the preamp board. Appreciate your information on this. And I assume I should order a balanced set.

Thanks.

Regards,
Askae
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Old 24th April 2016, 07:34 AM   #8
tvicol is offline tvicol  Romania
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Hi Askae,

Maya can be integrated with Bruno Putzeys Balanced Preamp as it is. No modifications needed.
For BPBP you need a balanced set.

Regards,
Tibi
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Old 26th April 2016, 09:14 PM   #9
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Quote:
Originally Posted by Alarudin View Post
Hi Tibi,

I've seen some discussion about using your volume controller for Bruno Putzeys Balanced Preamp which I'm very interested. Will this be the thing I should be buying or it wouldn't work without some serious modification to the preamp board. Appreciate your information on this. And I assume I should order a balanced set.

Thanks.

Regards,
Askae
You would only need one board but, a word of caution here. BPBP uses the volume control in the feedback loop of the OP amp. See discussion.
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Old 27th April 2016, 08:36 AM   #10
zdr is offline zdr  Belgium
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Isn't this a bit too expensive? Ok, it's a very nice project if you want a real professional result, but I managed to get similar functionality with following part list available from ebay:

1) arduino nano clone: 2eur
2) 4 channel relay board with optocouplers: 2eur
3) LCD 1602: 1.5 eur (4.2 eur for OLED graphic display)
4) IR remote with sensor: 1.5 eur.
5) headers, cables, resistors, etc: 2 eur.

I still need to integrate LDR into this, but I don't expect total to be more than 20 eur.
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