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Thanks. Noted. It's a 100Ah sealed lead acid rated for 900CCA. The only way for pure hydrogen or oxygen to get out is if the seal is broken. That would require enough current to boil the water and over pressure the battery (entirely possibly in a real world scenario). That would occur if...

Too much. In the cardboard box is the DSP (so I can protect it from me being an idiot). It has it's new power supply (in the unshrunk shrink tube) as the onPCB regulator died. Along side the UI dev bed. Which as you can see from the random gibberish "volume" value is coming along really well...

The PCM2706 is only there as it's driverless, UAC1. ie. it should work with anything. I have not even attached a master clock to it, I don't think it provides one or accepts one. That's fine in my case as the IO is asynchronous driven by the output FIFO and expects things to get out of sync...

Update. I cannot recommend those optical modules. The first one died and I assumed it was my fault. I replaced it. This morning the second one died. Same behaviour. Worked fine, although an IR camera reveals one of the ICs is 55*C, 65*C if you step the bit rates up. Then suddenly not...

Yes. A bit of a captain obvious statement. However. Define "system". Look I'll be fair on you. In reality you are absolutely correct. To restore my nice quiet DC rail, I just need to put a sizable enough battery to supply a few days of isolated DC power for "analog side" devices like amps...

I note. Tesla power wall, 7kWh, £7000 + install + accessories + shipping + VAT =>£1000 per kWh. Wholesale LiFePO4 batteries < £200 per kWh. + expenses... granted very expensive ones. No right or wrong, just a balance of cost and convenience. Tesla Powerwall is not the only ones at it. Most...

What? The power wall is a block of DC batteries. If you put AC into it, it will explode. I don't mean the AC feed INTO the powerwall I mean the + - terminals on it's battery terminals. You'd need to open it to find them. See "Off grid Garage" on YouTube.

What I am facing is "FzzTcTcTcFzzzzzTcTcTc" noise from the USB and the huge amount of crap a gaming PC rig will dump onto the grounds, causing it to bounce. You can "hear the mouse move". Also the whine of a boost or buck covertor or the PSU in a network switch. DC power rails, in the wild...

Mains noise itself with inverter versus grid versus hybrid (of various flavours). I would have little experience and few ideas. One thing is pretty much guaranteed is some form of isolation between the mains and DC. Even if that regrettably includes mains leakage via the Y class feedback of...

Slight difference. Your system is only mains voltage. What I am working with would be what you would only see if you put a scope on the power wall's DC terminals.

Last month I had a 50W panel and a 12V lead acid battery. A kinda hobby project that "stuck" and I kept using it to charge my phone, and anything battery operated I could find and in winter charge the battery to keep it alive. Audio related. An ungrounded, floating, leadacid is a VERY quiet...

Need some more? I'll share the source files, et. al, once I fix the fact the LCLK and SCLK are swapped on the Anamero modules (top and bottom) Optical and USB1 As you can see, it's rather simple. Given that it's mostly modules.

It looks more like a USB extender appliance that's been rebranded for audio. ie. it just converts USB to optical so you can "ship" the USB around the house, far further than the 5m USB affords. Home theatre types often use this type of device and another for HDMI so they can put their stuff...

One of the UARTs is active and supports either a commandline for setting the EQ parameters or a funny terminal VU meter toy I did when I was bored.

Yep. One optical/coax I2S bridge. Two PCM5102A DACs and an STM32H750 MCU. Additional I2S headers for a USB I2S/DSD Bridge and a smaller PCM2706 "driverless" USB bridge. 2 WS2812b RGB LEDs.... because I have a roll of them and they are cool for status lights, clip lights, error lights etc. 2...

I just got my first "dev" prototype PCB for this setup. Still a long way to go. This is not a final board, it was just to get it off of breadboards which were driving me nuts with dodgy connections. Lots of software dev to do and another whole board for the screen and knobs. Still plenty of...

Oh, trust me, digital productions have taken advantage of the platform. Dynamic range. It's fine for cinema honestly, but it's usually completely un-fine in a domestic setting. Since media distribution via TV went digital the producers have started to expand the dynamic range of both to the...

The term "ground loop" gets over used. It originates in the days of large, high voltage valve equipment when the grounds where often offset by some stupid DC voltage and other bizarre things. Spend time with the valve aficionados and you'll see some things. It will also ruin your day setting...

Version 1 of this amp made the mistake of using 10K divider resistors which didn't provide enough impedence to stop power rail noise modulating the ground. While re-doing the PCB to use 100K resistors I found running it on battery it was silent. For the next 2 years I had it on a 3S2P 18650...

I have been running my own bespoke OPA551 headphone amp for 3 years or so. It's epic. It goes to 11. Literally. When I deciding the gain things kept steering me to x10. But I've watched "Spinal tap", so I made it 11. The OPA511s certainly have the gain and the current to drive 38Ohm...