5 ms·

Is it just me or is this short on details? I don't see any reason this timer is actually easy to wire up, and I remember my similar watch decades ago also as b

• netsharc 6y ago
  Well, maybe it's not so easy to wire, but if you want to make an accessible bomb-making tutorial, you have to use materials that are easily obtainable...
• rkachowski 6y ago
  whilst going into dubious territory, i also wondered the same. I assume its something to do with the speaker only being used for alarm bleeps? from what i remember from failed watch repairs on these as a child, there's really nothing super easy about that connection
• maeln 6y ago
  I think you just hook up a relay/transistor to the the small piezo buzzer that make noise for the alarm. Its dirt cheap and very easy to come by, so I guess that is why it as been used in bomb timer making.
• djrogers 6y ago
  The back case is actually the piezo speaker, and it connects with springy contacts not a soldered or wired connection. I would imagine this opens up a variety of easy ways to connect this to a relay for a "louder" alarm.