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I have checked that the master and slave are indeed connected and working. I missed out the GND connection. The slave address i received is 85 instead.

bytk
– bytk

2017-01-27 02:14:11 +00:00
Commented Jan 27, 2017 at 2:14
@bytk - Are you saying it is working now? That the whole problem was a missing ground wire?

Nick Gammon
– Nick Gammon ♦

2017-01-27 04:06:43 +00:00
Commented Jan 27, 2017 at 4:06
@NickGammon It is communicating with each other now, but it doesn't communicate correctly. As mentioned now the requested address gives a '85' instead of a '8' as for input A0, for example it should show '700' with a little bit of variant, but now it shows a repeated pattern of e.g '0 0 0 400 500 800 1040 1040 1040 800 500 400 0 0 0'

bytk
– bytk

2017-01-27 17:34:46 +00:00
Commented Jan 27, 2017 at 17:34
The slave address is not returned, but the value 0x55. That is decimal 85. Reading analogRead() while the input is open, can result into anything.

Jot
– Jot

2017-01-27 18:08:12 +00:00
Commented Jan 27, 2017 at 18:08

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