wait a gosh darn minute,look at that photo i sent of the "bomb clock"
#1)it is a plug in 115vac with a 9volt battery back up
#2)there are no batterys in the case so he had to open it to plug it in (no big battery pack no big boom)
#3)it is a factory board in fact two of them( one the clock board and the second is the switch board)
and no one uses wire like that for interconecting boards and the led display but the factory
#4)once again you would have to open the case to set it
conclution(he built nothing) ,he took a factory clock( sunbeam,ge emerson?) and put it in a cool case ,moved the led display to the front and did not even move the set switches
or drill a hole for the power cord , and now he is going to meet the president of the united states (WTF)