Ive checked the cables for snugness and eveything is wired up properly by the looks of it, but the second board onward do not get warm or produce a hashrate. Is there something im not doing right? each unit has its own EVGA 1300, so there is total overkill of quality 12V power.
otherwise, the kit was quite good - arrived in one piece (though a good kick to the box by a DHL courier would likely cause damage) and is a nice design both for fan placement/volume and minimalism of costs.
would like to see a class 8 or better SD card though since the RPi can go through class 4 cards quickly during reboots or power failures.
is there a way to see the actual cgminer process going on? I doubt it recognises anything other than the first board but id love to check the live log and settings
You did change the "Board Num" to 8 in the webgui/cgminer config right? Also, I heard something about certain firmware needed for running up to 8 boards on a single R-Pi.
If you are still having issues, I would test each board individually until you test them all for good working order. Then once they all checkout good in SINGLE board config, I would start daisy-chaining them together and testing as you add more boards.