a new build!
the y2 prototype lives. it works!!
that's the y1 'receiver board' (for spdif and i2s) on top and the y2 board, below.
some stages in the pcb build:
and the guy who actually does the real business, here; the DAC chip:
I confess, I used 'flood and suck' method to solder these high density surface-mount chips. throw extra solder on all the pins and then wipe off with solder wick pressed by the tip of the iron as you swipe across the pins. leaves just a bit of solder behind and usually (hopefully) clears all bridges.
began the build early in the AM today. missed some parts, so ran out during the day for them. finished the build. it didn't work ;( amb suggested I connect the data wire. doh! that worked
build complete by dinner time.
update: I have a GUI for the gamma2
here's a sneak peek:
its showing which input to the DAC is selected (both a short name and a 16 char max longname on the bottom); it also shows the type of port (coax/opto), its port number, and 2 weird settings that this DAC supports: an anticlipping on/off switch and a filter a/b/c switch. that's the dot thing and the Fa (filter A).
you can control this with an IR remote (sony dvd, etc) and each button on the keypad (1..3, 4..6, etc) can be assigned one setting, so pressing 4 gets filter A, pressing 5 gets filter B and so on. there's enough spare keys to give each function its own button and area on the display
arduino based and using that lcd backpack I built a few days ago. running new code (just wrote it today) that managed the wolfson dac chips at the so-called hardware-mode level.
edit: adding inside view shots with more final mounting/wiring:
