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Topic: [Solved] LCD03 i2c problem (only displays i2cmode@0xc6) (Read 973 times) previous topic - next topic


Apr 07, 2014, 08:00 am Last Edit: Apr 07, 2014, 06:53 pm by Zingo Reason: 1
I have a another tricky question.
Yesterday i changed my code to inteact with my LCD03 using the i2c interface.
Everything worked fine until i attached the MD03 motorcontroller.

Suddenly my LCD03 only displays "i2cmode@0xc6".

I'm using the wire interface to interact with the two different modules. The MD03 and the LCD03 i connetced to the same A4 and A5 pins on the arduino board.

The problem starts when I attach the MD03, if I remove the MD03 connection to A4 and A5 the LCD work agian (prints text etc...)

Please note that the MD03 interaction works fine with both the LCD and the MD03 connected to A4 and A5.

HW and used ports
•   Arduino Uno board
•   LCD03 (in i2c mode, jumper removed) connected to A4 (SDA), A5 (SCL)
•   MD3 Motor Controller connected to A4 (SDA), A5 (SCL)
•   IR Remote Control connected to pin 11
•   AttoPilot Volt & Cur. BoB 90A connected to the digital A0 and A1

any problem solving sugestions?



You might get some responses if you identified what an LCD03 is.



Lcd03: http://www.robot-electronics.co.uk/htm/Lcd03tech.htm

I'm sure that its a simple solution



This is like pulling teeth....  
Now identify the MD03 (or is it MD3)?

Have you looked at this --> http://forum.arduino.cc/index.php?topic=149018.0



Root cause of the problem was related to a  bad solder joint. Isolated the problem using a oscilloscope. Everything works fine

Sorry if you feel that this topic is like pulling teeth. If I have misused the "posting instructions"; I'm sorry.



Sorry if you feel that this topic is like pulling teeth. If I have misused the "posting instructions"; I'm sorry.

It's not that you misused anything, you just did not post enough information for anyone other than those who are already familiar with 'robot-electronics' part numbers to help you.


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