I'm using a Raspberry Pi 4b and want to use it as a streamer. In the past i had an allo digi hat to a dac but now want to go full DIY. I want to separate the streamer and my DIY DAC into their own cases with separate power supplies. First question the clocks? Would you put those as a hat on the pi i was looking at the ian canada q7 reclocker or would you have that connected to the DAC board in the dac case? Icould use a hdmi i2s output board from pi and hdmi i2s input board on the dac board. I want to try an R2R board for DIY dac just t hear one.
I hope this makes sense, if not don't sling me pelters
I hope this makes sense, if not don't sling me pelters
I started with a PiMoroni audio hat, then used the same code to drive an I2S DAC on a separate board with separate power supply.
It worked well enough. For what I needed at the time anyway!
If I do this again, I think I will use a Pi hat with TOSlink output and have a DAC which can be interchanged with the one from the CD player.
25 years ago I designed a clock extraction circuit, PLL based, for fibre optic data, I think you'd do it quite differently now.
As a stepping stone maybe a commercial DAC chip with PLL would do the clock extraction and re-timing for you?
It worked well enough. For what I needed at the time anyway!
If I do this again, I think I will use a Pi hat with TOSlink output and have a DAC which can be interchanged with the one from the CD player.
25 years ago I designed a clock extraction circuit, PLL based, for fibre optic data, I think you'd do it quite differently now.
As a stepping stone maybe a commercial DAC chip with PLL would do the clock extraction and re-timing for you?