Build Thread for TPA BIII + Ian Async I2S FIFO + OPC NTD1 + Salas SSLV - Page 24 - diyAudio
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Old 12th October 2012, 11:05 PM   #231
DQ828 is online now DQ828  Australia
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Originally Posted by glt View Post
Very nice!

I too had some problems with the remote when using analog write. I was not able to find the reason, so I gave up controlling the brightness with the Arduino and used a manual pot. It is possible, the pulsating LCD is creating a lot of noise and interfering with the IR sensor. I documented some issues here: Apple Remote Control for Buffalo II DAC H i F i D U I N O
BTW, what are those small orange boards?
Thanks, I'm glad it's not just me.

The orange boards are Tinkerkit Mosfet relays, they are switching the relays I had already installed into my amp & DAC.
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Old 13th October 2012, 02:25 AM   #232
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Originally Posted by DQ828 View Post
Pin 19? must be a different screen, mine is pin 37
We are using the same screen, look at the marking of the board, your pin no should be 19.
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Old 13th October 2012, 07:19 AM   #233
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Originally Posted by bigpandahk View Post
We are using the same screen, look at the marking of the board, your pin no should be 19.
Yes you are right, I was forgetting how the numbers went
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Old 13th October 2012, 07:27 AM   #234
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Removed the pin connecting LCD screen and Arduino Shield, solder a 47ohm resistor in series and connect to PWM pin. Screen dimming and off are working fine. Other functions including remote are working as expected. Number of relays increase from 2 to 6 and seems still not enough
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Old 13th October 2012, 07:38 AM   #235
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Originally Posted by glt View Post
Yeah, I am most interested in this bug :-). The way it is currently programmed (as dimdim said) is that every input has independent settings for each function, and they are saved in eeprom. When you switch to another input, the settings are recalled from the eeprom and programmed into the registers. Granted, not all of the them would change, but it was easiest to just rewrite all the values into the registers everytime you change inputs.
I go through the original HiFiDuino's code again and have a different view. There is no specific format for each input, you just have to assign a name for it. So it is not possible for the code to know whether input #1 is SPDIF, PCM or DSD. The code only read the SPDIF status register to determine whether the source is SPDIF or DSD.
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Old 14th October 2012, 06:53 AM   #236
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I successfully modified the BIII to run in synchronized mode with FIFO. The sound is lot more dynamic with more details. Thanks Ian.

But Synchronize mode cause a new problem, Arduino can't display the correct clock frequency
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Old 14th October 2012, 06:56 AM   #237
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Originally Posted by bigpandahk View Post
I successfully modified the BIII to run in synchronized mode with FIFO. The sound is lot more dynamic with more details. Thanks Ian.

But Synchronize mode cause a new problem, Arduino can't display the correct clock frequency
Where are you determining fs? For waveio you can use its output header...
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Old 14th October 2012, 07:24 AM   #238
syklab is offline syklab  Hong Kong
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Originally Posted by bigpandahk View Post
I successfully modified the BIII to run in synchronized mode with FIFO. The sound is lot more dynamic with more details. Thanks Ian.

But Synchronize mode cause a new problem, Arduino can't display the correct clock frequency
Hi,
Like your setup with Ardunio.
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Old 14th October 2012, 07:26 AM   #239
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Originally Posted by hochopeper View Post
Where are you determining fs? For waveio you can use its output header...
HiFiduino's code read the register in the BIII and then divided by an integer which was calculated based on the crystal frequency. I am not sure whether Ian's clock board output fixed frequency or will be changed based on the SF of the source

Thanks for your suggestion, but it only indicate the frequency when using USB:-(

Last edited by bigpandahk; 14th October 2012 at 07:28 AM.
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Old 14th October 2012, 09:07 AM   #240
qusp is offline qusp  Australia
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cant you still read the register on the BIII? fifo MCLK is fixed frequency (1 or 2 depending on if you are using single or dual clock board) the BIII will use BCLK which changes with FS, not MCLK I would think. the info presented to the BCK pin on ESS will be the same whether you use the onboard clock, or fifo in sync mode

Last edited by qusp; 14th October 2012 at 09:12 AM.
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