Dear Tim,
I am sad to say that I will be leaving the Mo0de family, at least for a while. At this point in the development cycle Mo0de is simply not stable enough for my needs. I think that you have an excellent project, but it requires too much time and effort for me. If I may make a suggestion? I think that you should devote one entire development cycle to code review and stability. I know feature progress is always exciting and satisfying, but you need a rock-solid foundation to build your dream streamer on.
On my way out I would like to offer a little back: I agree with Larry Moore about the use of a switching mode power supply for the Pi and a linear power supply for the DAC. For the smps I find that a Jameco 5-volt, 3-amp unit is particularly well suited to power the Pi. It is quite solidly built and has sufficient capacity to handle surge needs. Link below. However, the real problem child is usually the power cable. The wire in most USB cables is simply too thin to handle the current needs of the Pi. A standard cable is usually 28 AWG (American wire gauge), which can carry a maximum of about an amp and a half. That is wholely inadequate. I suggest using 24 gauge wire, which can handle 3.5 amps, or better yet 22 gauge which can handle 7 amps or so. In my work I like to have approximately 2x capacity. Finally heartily I agree with Larry on using the GPIO pins to power the Pi and the USB C connector on the DAC to power it. I built a quiet/clean 5 volt linear supply using a 7805 regulator for the DAC, which works well and sounds great. For that I use a fast charge USB C cable, which works fine. (The newer fast-charge cables usually use 24 AWG wire.)
https://www.jameco.com/z/RS-15-5-MEAN-WE...19043.html
Finally, to heep your properly powered Pi from throttling itself, a little heat sink on the cpu and and/or a tiny fan is very helpful.
Sorry to be stepping off the train, but at the moment I simply do not have the time that is required to run Mo0de.
I wish you all the very best and hope to see you on the flip slide,
John
PS The pic is a Pi, sans its DAC, powered with the Jameco supply. 22 AWG wire is used to connect the supply to the GPIO pins.
I am sad to say that I will be leaving the Mo0de family, at least for a while. At this point in the development cycle Mo0de is simply not stable enough for my needs. I think that you have an excellent project, but it requires too much time and effort for me. If I may make a suggestion? I think that you should devote one entire development cycle to code review and stability. I know feature progress is always exciting and satisfying, but you need a rock-solid foundation to build your dream streamer on.
On my way out I would like to offer a little back: I agree with Larry Moore about the use of a switching mode power supply for the Pi and a linear power supply for the DAC. For the smps I find that a Jameco 5-volt, 3-amp unit is particularly well suited to power the Pi. It is quite solidly built and has sufficient capacity to handle surge needs. Link below. However, the real problem child is usually the power cable. The wire in most USB cables is simply too thin to handle the current needs of the Pi. A standard cable is usually 28 AWG (American wire gauge), which can carry a maximum of about an amp and a half. That is wholely inadequate. I suggest using 24 gauge wire, which can handle 3.5 amps, or better yet 22 gauge which can handle 7 amps or so. In my work I like to have approximately 2x capacity. Finally heartily I agree with Larry on using the GPIO pins to power the Pi and the USB C connector on the DAC to power it. I built a quiet/clean 5 volt linear supply using a 7805 regulator for the DAC, which works well and sounds great. For that I use a fast charge USB C cable, which works fine. (The newer fast-charge cables usually use 24 AWG wire.)
https://www.jameco.com/z/RS-15-5-MEAN-WE...19043.html
Finally, to heep your properly powered Pi from throttling itself, a little heat sink on the cpu and and/or a tiny fan is very helpful.
Sorry to be stepping off the train, but at the moment I simply do not have the time that is required to run Mo0de.
I wish you all the very best and hope to see you on the flip slide,
John
PS The pic is a Pi, sans its DAC, powered with the Jameco supply. 22 AWG wire is used to connect the supply to the GPIO pins.
See you soon
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