With the 1k resistors improvement is evident in terms of voltage level for 
the high signal.

<https://lh3.googleusercontent.com/-lVyqVVCeq00/WsW6kDrSu8I/AAAAAAAAJGs/gph0JS1lw2EtRNI5SIzdKpIahFD52wCsQCLcBGAs/s1600/ADS00009.BMP>


However the rise time still seems to be slow and I2C device is still not 
responding to commands. 


<https://lh3.googleusercontent.com/-Jdsb82FY5Nw/WsW668-BoQI/AAAAAAAAJGw/xs8RgChD4jAtOYV2Rl4oB-Af4_AGI301QCLcBGAs/s1600/ADS00010.BMP>



I will try and increase the resistance to 3k3 as advised by John and will 
report back with results.

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