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Same circuit, better labels...
The things that have changed from mora's design is the diode and the 4 input terminals...
The four connections the left are inputs... Ie either a wire or on my PCB I'm using a set of four screw terminals...
Moved the diode to the negative terminal...
Added the transistor and two resistors at the lowest terminal... You use either the R7 alone making this circuit behave exactly like mora's (except for the diode)
OR the R6 and transistor and then you use a switch and sent +12V to each of these terminals and all boards switch on...
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