Hifiduino with VFD Display
Mr. AR2 (diyaudio, http://www.burningamp.com) has implemented the code for his BII DAC but this time with a very cool looking VFD display. The display used is a drop-in replacement for the 20×4 LCD and requires no code modification. In addition, the superb photos you see here (click for larger photos) are by themselves a work of art. Mr. AR2 is a professional photographer.
Digital portion is housed in older Proceed case that I gutted and placed my parts inside. I used their PS for pre regulation, and than added the rest of my parts. I am using Arduino Uno to control DAC and I used VFD display. VFD display is fed by separate regulated 5V since it takes 250 – 300 mA. That is the existing one shown on the front panel board. VFD is Noritake CU20045 – UW5J which is from their series as direct LCD replacement, pin to pin.
Proceed had a lots of parts that I could use and I wanted to preserve their front plate with all moment switches and LEDs. So I made the opening to protrude VFD screen in the place where there was original screen, and I paced a another board on the back of that. That is where I positioned Arduino and did all connections for rotary encoder, IR diode and switch.
This implementation is part of the project I have been working on last several months. It uses Titan USB to I2S converter. Titan is manufactured by LightHarmonic better known for their DaVinci DAC. It provides multichannel output at 384 kHz and it sounds just astonishing. For now I am using Buffalo 2 as DAC, but planning to drop in ACKO DAC with ESS 9012.
In the analog output I use Legato 3 and suppling it with Shunty regs from separate case. Two cases bellow are the ones I made – modified and they house power supply and analog buffers with transformers and analog volume control. My volume control is passive relay controlled, and as I am typing this I am listening to the system. I have to say I cannot hear the difference between volume on Sabre compared to volume in analog. Your programming works really well and volume and remote are working exceptionally.
I truly enjoyed these pictures. Check out his work.