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Old 10th June 2012, 02:13 PM   #1
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Default Use Arduino to control BIII

I connect the Arduino Mega 2560 to BIII using I2C. I found there is always 3.3V at the SDA & SCL headers at BIII causing the I2C bus always high. Is there anything failure on the BIII or I have set something to make it work?

PS.

With pull high at BIII I2C bus, I think a simple resistor voltage divider for connecting 5V Arduino to 3.3V BIII may not work. I ordered the level converter today and hope it solve the problem.

Last edited by bigpandahk; 11th June 2012 at 02:24 AM.
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Old 9th August 2012, 05:30 AM   #2
DQ828 is offline DQ828  Australia
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Quote:
Originally Posted by bigpandahk View Post
I connect the Arduino Mega 2560 to BIII using I2C. I found there is always 3.3V at the SDA & SCL headers at BIII causing the I2C bus always high. Is there anything failure on the BIII or I have set something to make it work?

PS.

With pull high at BIII I2C bus, I think a simple resistor voltage divider for connecting 5V Arduino to 3.3V BIII may not work. I ordered the level converter today and hope it solve the problem.
How did you go with the level converter, I am thinking of doing the same re connecting BIII straight to the Arduino Mega but am a bit reluctant to take the plunge (not brave enough),
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Old 9th August 2012, 05:45 AM   #3
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How did you go with the level converter, I am thinking of doing the same re connecting BIII straight to the Arduino Mega but am a bit reluctant to take the plunge (not brave enough),
I bought a level converter from China (US$1.50), work great.
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Old 9th August 2012, 08:41 AM   #4
DQ828 is offline DQ828  Australia
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Quote:
Originally Posted by bigpandahk View Post
I bought a level converter from China (US$1.50), work great.
I'd be very interested to know more about your project, the more info I can get the better
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Old 9th August 2012, 08:52 AM   #5
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I have posted a thread for my project here:

Build Thread for TPA BIII + Ian Async I2S FIFO + OPC NTD1 + Salas SSLV

Just PM me if you want any information.
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