The DAC is a kit from TwistedPear Audio, based on the WM8741.
2-wire I2C connection (plus GND)
Inside the OPUS DAC: Leftmost is the toroid transformer inside a tin can. Middle is a dual DC power supply, rightmost are 3 boards stacked: top is the SPDIF receiver, middle is the asynchronous re-sampler and re-clocker board and bottom is the DAC board based on the Wolfson 8741.
Detail of the 2-wire I2C connection to the DAC board.
Detailed connection diagram
Arduino I2C connections are analog pin 4 and 5
1 comment:
Hi,
Very nice post, I'm in the process of building a similar project but with some added complexity and...
...I'm having problems with the Detailed connection diagram you show in this post. I have a dual-mono configuration and I'm using also 2-wire I2C with Arduino Uno R3.
How can I contact you about this project? I have a diagram of my dual-mono with upsampler I want to send you so you can input some suggestions. My email is producao.1979gmail.com.
P.S: I also did some modifications to the code you provide. It would be wonderful if someone could help me review it.
Thank you very much in advance...
All the best
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