Hi Gents,

I finally received relay array (8 ch). While I was waiting, reassembled all electronics to proper enclosure:

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While connected only power source, I have wired BOB power inputs (12v) and tried to power on and see if all is good. And my BOB gave some flash and smoke :

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and here is closeup before this :
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I'm not sure how this happened, but I only see that the bolt I have used, head was too big (even before it was ok..) Anybody see other issue here ? I hope that new BOB will no act same...

Now I'm waiting for the new BOB to arrive and hopefully get everything going...