Paul Stoffregen has shared this Teensy audio shield:
PT8211 Audio Shield for Teensy
PT8211 is an inexpensive 16 bit stereo DAC.
This small breakout board connects the PT8211 to Teensy 3.2, Teensy 3.5 or Teensy 3.6.
Paul Stoffregen has shared this Teensy audio shield:
PT8211 is an inexpensive 16 bit stereo DAC.
This small breakout board connects the PT8211 to Teensy 3.2, Teensy 3.5 or Teensy 3.6.
News from the USB DAC + Headphone Amp project by Yin Zhong (summivox):
In the interim update post I posted the plan for integration into 2 boards: A 2-layer power board, and a 4-layer main board. Actually I have had a good copy of the main board for quite a while: Story for the power board is not as good though. In the beginning I screwed up on […]
An update from the USB DAC + Headphone Amp project by Yin Zhong (summivox):
Months into the project and I was still amazed at the lack of availability of a class of ASICs: USB-I2S bridges. Well I just lied — if you are fine with USB 1.1 and USB Audio Class (UAC) 1.0, which severely limits your (bit depth × resolution × channel count)
So I kept looking for ASICs, and I found one that is close enough: XMOS XHRA-2HPA. It even comes with a reference design that does exactly what I want!
summivox has shared the board on OSH Park:
It’s been a while since I last wrote *ahem* lies *cough* on this project. I am currently a little bit torn whether I should keep writing it here or start posting to my new hackaday.io presence… Anyway here is a brief update: TL;DR I now have a working standalone unit — USB in, headphone out […]
via Making Myself a USB DAC + Headphone Amp — Interim Update — Frog in the Well
I need a DAC for my AKG K702. However, the more I looked at commercially available a.k.a. “audiophile” products, the more snake oil I smell. So even before I ordered my CEntrance DACPort Slim, I was already looking into how I can reinventing the wheel
I use OSHPark for prototyping PCBs. I decided to use their 4-layer FR-408 stackup simply for an un-broken ground layer. Turns out that the analog signals can easily fit on the top layer, so I allocated the power layer to the negative rail, and the bottom layer to positive rails.
The DAC + Filter module works! It produces reasonably clean line-level audio signal as expected.