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IanCanada's Latest RPi GB Goodies Impressions... and your tweaks, mods and hints...
IanCanada's Latest RPi GB Goodies Impressions... and your tweaks, mods and hints...
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Old 19th February 2020, 11:09 PM   #1281
wlowes is offline wlowes  Canada
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Quote:
Originally Posted by soundcheck View Post
Ah. OK. Didn't realize you still live in the dark ages of manually toggling switches.
That's been another live on my side. Sorry for the ignorance.

I simply can't live with a DIY system based on "toggle-switches" (for every DC rail!)
or on-system control knobs anymore. No wonder you're leaving it on 24/7.


Enjoy.
Actually only two switches for many power supplies. Such engineering excellence... My music room also has many pot lights in the ceiling all turned all turned on at once with a single wall switch. Right out of the dark ages. It too is not dangerous, and I do not need a manual to turn the lights off.
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Old 20th February 2020, 02:42 PM   #1282
randytsuch is offline randytsuch
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IanCanada's Latest RPi GB Goodies Impressions... and your tweaks, mods and hints...
Quote:
Originally Posted by MikeyFresh View Post
Typo there, you meant 3a @ 5v
I leave mine on 24/7 too!
Good catch, thanks for the correction.
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Old 20th February 2020, 03:17 PM   #1283
sq225917 is offline sq225917  United Kingdom
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Do they really draw 3A sat doing nuffink?
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Old 20th February 2020, 06:44 PM   #1284
MikeyFresh is offline MikeyFresh  United States
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IanCanada's Latest RPi GB Goodies Impressions... and your tweaks, mods and hints...
Quote:
Originally Posted by sq225917 View Post
Do they really draw 3A sat doing nuffink?

No not at all, though what the actual draw is will depend on what is connected, if you were to have all kinds of USB devices drawing bus power that obviously increases the load considerably.


The RPi foundation has specified use of a 3 amp power supply with the 4B board to allow for some wiggle room. I have booted the 4B using a 2.5 amp supply no problem, even with a USB bus powered DAC connected, there is no lightning bolt icon indicating a voltage sag due to excessive current draw.



If you were going to see that problem it would be during the initial boot sequence, when the most juice is required, or when too many power hungry devices are attached.
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Old 20th February 2020, 08:27 PM   #1285
randytsuch is offline randytsuch
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IanCanada's Latest RPi GB Goodies Impressions... and your tweaks, mods and hints...
3A is a really conservative (high) estimate, I think, but it depends on your setup.
I have a passive (transformer) output stage. With an opamp output you might draw more current.
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Old 26th February 2020, 11:50 AM   #1286
Lso is offline Lso
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Default using a different DAC

I'm trying use a Aroiodac with the ReceiverPi in a RPI free mode, but ihave no audio out.
Is this combination possible? I suspect that the Aroiodac is a master DAC.
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Old 2nd March 2020, 10:56 AM   #1287
sebbyp is offline sebbyp  United Kingdom
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Quote:
Originally Posted by misterdog View Post
Not if there is only a market for 10/30 boards with all the R+D time for Ian.

I would guess at a weeks work to design/prototype/populate/test/troubleshoot,
REV 1.1 repopulate test. At what $ 30/Hour + parts.
I would guess at least $ 200 more, if 20 people were still interested at that price.

Some will probably wish for dual DAC chips making the market smaller still.
I would be interested in the 200-300 USD range for a 2x single-chip AK4499 DAC boards and I have a few friends that would be too

I hope it is financially viable for Ian to do a design.
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Old 2nd March 2020, 11:26 AM   #1288
misterdog is online now misterdog  United Kingdom
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AK4499DM DAC基板

33,500 Japanese Yen equals
243.37 Pound sterling
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Old 2nd March 2020, 11:30 AM   #1289
sebbyp is offline sebbyp  United Kingdom
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Quote:
Originally Posted by misterdog View Post
AK4499DM DAC基板

33,500 Japanese Yen equals
243.37 Pound sterling
I have seen that Dac.

I am not sure a dual-mono build is required for the 4499, but a pretty good value board all the less

I'd be happy either for a single or dual-mono board from Ian.
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Old 2nd March 2020, 12:15 PM   #1290
pinnocchio is offline pinnocchio  Canada
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Me too, even 400$

Once you listen to AK DAC you never go back! LOL

Do
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