02-17-2021, 02:47 AM
HI,
New to this RPi audio stuff. Was tearing my hair out for days trying to figure why Moode wouldn't offer my Schiit Modi 3 as a selection in the MPD settings. After many hours of web searches I finally got a wiff of a hint (from a Schiit forum post) and installed a powered USB hub between the RPI 4B and the Modi 3 and voila! So excited to actually get sound out.
So here are my questions:
1. Anybody else experience this?
2. The RPi 4 is rated at 1200 mA output on the USB ports (combined, though nothing else plugged in.) Why should the the modi 3 draw anything close to that?
- I haven't measured USB current draw so no clue where that stands.
- I thought maybe the attached 7" touch screen was perhaps loading the device but disconnected it to no effect.
3. Is my Rpi faulty? (I am using the official RPi 4 power supply.)
4. Any suggestions? I'd just as soon not have the powered hub in the chain. There are too many wires hanging off the desk as it is. :-)
Notes:
- Brand new RPi
- Using the latest stock Moode image
- Using the included power supply with the Schiit Modi 3 has no effect.
- Schiit says the PS is not necessary for the USB input and is only required for the coax and optical inputs; what they don't say is that the PS serves no purpose for the USB input (at least as experienced in my test.)
New to this RPi audio stuff. Was tearing my hair out for days trying to figure why Moode wouldn't offer my Schiit Modi 3 as a selection in the MPD settings. After many hours of web searches I finally got a wiff of a hint (from a Schiit forum post) and installed a powered USB hub between the RPI 4B and the Modi 3 and voila! So excited to actually get sound out.
So here are my questions:
1. Anybody else experience this?
2. The RPi 4 is rated at 1200 mA output on the USB ports (combined, though nothing else plugged in.) Why should the the modi 3 draw anything close to that?
- I haven't measured USB current draw so no clue where that stands.
- I thought maybe the attached 7" touch screen was perhaps loading the device but disconnected it to no effect.
3. Is my Rpi faulty? (I am using the official RPi 4 power supply.)
4. Any suggestions? I'd just as soon not have the powered hub in the chain. There are too many wires hanging off the desk as it is. :-)
Notes:
- Brand new RPi
- Using the latest stock Moode image
- Using the included power supply with the Schiit Modi 3 has no effect.
- Schiit says the PS is not necessary for the USB input and is only required for the coax and optical inputs; what they don't say is that the PS serves no purpose for the USB input (at least as experienced in my test.)
