Any suggestions on which transformers to use for this use case? So that a transformer can power more than one UCPure. That we the cost would be down and more importantly the space would be manageable.
With the very kind help and persistence of @Chris1967, I've finally figured out the problem with my Ian Canada streamer and GentooPlayer. It was a hardware problem with the StationPi Pro, after all. Once that got out of the way, my streamer is now working fine with GentooPlayer (see photo). I will be expecting a replacement StationPi Pro Ian and hopefully be able to complete my streamer project soon.
Oh yes, I have also ordered a MonitorPi Pro, so that I will be in a position to monitor and also control the streamer.
From then on, I will see whether I can further improve the sound quality as much as possible. Any comments are most welcome, of course.
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Hello,
Digital audio made things easier?
Gabsters cat walking across a bunch of ultracaps. The clocks should be powered on 24/7. I wonder how other members did organize their things. I already wrote months ago if your neighbours toddler enters your house with a metal toy, get attracted by the Canadian Christmas decorations ( like we do) and starts poking around. But people here don't realize what these caps can cause when short-circuited.
Greetings Eduard
Digital audio made things easier?
Gabsters cat walking across a bunch of ultracaps. The clocks should be powered on 24/7. I wonder how other members did organize their things. I already wrote months ago if your neighbours toddler enters your house with a metal toy, get attracted by the Canadian Christmas decorations ( like we do) and starts poking around. But people here don't realize what these caps can cause when short-circuited.
Greetings Eduard
I am also building a TDA1541A Dac @Gabster 2000 
I am using 4 of the ICs and using Ians modules. Thanks For you video as it was great to hear your feedback
I am using 4 of the ICs and using Ians modules. Thanks For you video as it was great to hear your feedbackIf you look at the schematics the two secondaries are independent and not Center tapped. A Center tapped transformer would only have 3 wires on the secondary side a properly listed something like 12-0-12 v.
@NeoTheOne
If you have a MonitorPi Pro or a Q7 you can use the SYNC control to change multiple UcPure at the same time.
This would load the two secondaries evenly, if you would proceed with the transformer you previously linked to.
Hello,
If you have two ucpure circuit and one of them has to deliver twice as much current once they start charging will the two charging current be identical?
Of course on the ucpure board you can choose the lower charging current. Can also decide to go for a different transformer!
Gabster is also not using the transformer according to the datasheet. But it could be that the cat pulls some strings before it goes wrong. Cat have multiple lives they say.
My 4 year old nephew put a hair pin into the 220 volts outlet a few decades ago when security concerning household electricity was close to non existent. He survived.
Greetings Eduard
If you have two ucpure circuit and one of them has to deliver twice as much current once they start charging will the two charging current be identical?
Of course on the ucpure board you can choose the lower charging current. Can also decide to go for a different transformer!
Gabster is also not using the transformer according to the datasheet. But it could be that the cat pulls some strings before it goes wrong. Cat have multiple lives they say.
My 4 year old nephew put a hair pin into the 220 volts outlet a few decades ago when security concerning household electricity was close to non existent. He survived.
Greetings Eduard
@wcwc mentioned Antek transformer would be safe to use in this way. I'm thinking about this one - AS-1212 - 100VA 12V TRANSFORMER .
In most builds I see the secondary of the transformer directly connected to the UCPure input. What can be used to make sue the UCPure does not blow up? Btw, did the circuit board blow up or the capacitors themselves?
As i said here https://www.diyaudio.com/community/...eapon-to-fight-the-jitter.192465/post-7571056 i suspected the pins on the Station Pi Pro, because i have identical system (except Hdmi Pro instead of Spdif) , and have a fair knowledge of Gentooplayer.
I tried the pins for continuity and found that not all of them have. It seems to me there are dry joints on the smd pins. Furthermore, there seems to be a small "blob" between two traces at the back.
Ian responded promptly and helped us troubleshoot, namely use the rpi stack method and not Station, and use Volumio setup that is known to work.
It is a little odd everyone here thought it was the Gentooplayer or spdif incompatibility.
In any event the problem was solved, thanks to Ian!
Ian updated the manual once I told him by recommending Lower AC output voltage. The issue was ucpure stopped charging and only way I saw this problem
Hello,
Should we check our boards for dry joints after receiving them?
I would rather pay extra to get a checked board so i can be sure that the reason for no sound is not related to a blue monday in a far away country.
Especially for the people who dont wanna inhale soldering fumes every evening after a hard days work getting checked boards will be a big plus so you could get your stack mounted on a Saturday morning.
Greetings,Eduard
Hi, can anyone help me understand how to power the adapter board for the rfx ocxo(s)?
I could not find instructions, or manual. I am planning the power supplies at this early stage. The clocks seem to take 5 v each. But the adapter board has two sets of + & - for each clock, which has me confused. I had hoped to use Allo Shanti for the two clocks, but need to make sure I know what the adapter requires.
My plan was to put two of the super capacitor packs into a separate enclosure, and use these for the fifopi Q7 and the dual mono dac. I already have some lpsu(s), the extra Shanti being the best. Also in this way the clocks would be constantly powered. But I didn't plan on bringing two 5 v power leads to each clock - I must not be looking at it right.
Apologies for just bursting in with this, but I am new to this forum. I'm happy it is active, and would appreciate any help.
I could not find instructions, or manual. I am planning the power supplies at this early stage. The clocks seem to take 5 v each. But the adapter board has two sets of + & - for each clock, which has me confused. I had hoped to use Allo Shanti for the two clocks, but need to make sure I know what the adapter requires.
My plan was to put two of the super capacitor packs into a separate enclosure, and use these for the fifopi Q7 and the dual mono dac. I already have some lpsu(s), the extra Shanti being the best. Also in this way the clocks would be constantly powered. But I didn't plan on bringing two 5 v power leads to each clock - I must not be looking at it right.
Apologies for just bursting in with this, but I am new to this forum. I'm happy it is active, and would appreciate any help.
@NeoTheOne Yes you are correct it is very important to have a transformer with Dual secondary Winding not Center Taped the one I Use are medical grade from Mouser here is the link if anyone is looking for a good one they also work with all primary voltages.
https://www.mouser.ca/ProductDetail/Triad-Magnetics/VPM24-4170?qs=bdQtRzgkM2SdNm5Km%2BauXQ==
@EdwardL Yes Totally agree. Safety is important Ultracaps need to be tied down to a solid platform Do not Remove the Fuse it is not worth the gains. The terminals should be covered, and ideally te entire pack should be incased in a solid aluminum case. away from kids and and party people. Dogs can possibly Chew them when you are away Cats are not usually a problem but can be, they can walk gingerly and avoid touching anything not sure how they manage their 4 limbs so nicely.
@SimonJ Glad to see you building TDA1541 Dac would love to hear about your experience
Happy building to all, hope the new year is a happy one for all.
https://www.mouser.ca/ProductDetail/Triad-Magnetics/VPM24-4170?qs=bdQtRzgkM2SdNm5Km%2BauXQ==
@EdwardL Yes Totally agree. Safety is important Ultracaps need to be tied down to a solid platform Do not Remove the Fuse it is not worth the gains. The terminals should be covered, and ideally te entire pack should be incased in a solid aluminum case. away from kids and and party people. Dogs can possibly Chew them when you are away Cats are not usually a problem but can be, they can walk gingerly and avoid touching anything not sure how they manage their 4 limbs so nicely.
@SimonJ Glad to see you building TDA1541 Dac would love to hear about your experience
Happy building to all, hope the new year is a happy one for all.
Hi,Hi,
First test with all components connected! This is exciting! Thank you everyone for your help!
More pictures coming soon.
First impressions are positive but I know improvements are coming. Soundstage is already impressive. Will let you know.
Full report coming soon. 🎶🎵🎶
Thank you again!
Yves
No music…
I had to disconnect my DDC for a few weeks because I am reviewing a DAC. I tried to plus it back last week-end and I have no sound.
The clocks seem to work. I see see both frequencies playing. However, I see dashes on MonitorPi when I play DSD files.
It is connected with i2s using a hdmi cable on a Holo May KTE. PLL is set to Off. It displays UNLOCK on the May and it stays there. This is weird…
i’ll try to use another hdmi cable. I’ll check again if all the connections are solid. I don’t know where to look.
Any hints?
Thank you,
Yves