I'm trying to modify a Lego alarm clock for my kid. It has a select switch to turn the alarm on/off. It also has a NO push button (smack his head) which lights up the display for a short time and also activates "snooze".
My goal is to make the push button briefly open and close the "alarm on" circuit, which will reset it for another 24hrs. Similar to cycling the alarm on/of switch (not fun). I expect this will negate the snooze function (that's good). I would like it to keep the LED light function (I think it will still work).
Basically I need a relay, but I am limited on space. I think a transistor or something similar should work for this, but I would like help on what is available and how to use it.
I attached a crude schematic to help explain. I am able to tap into either side of the push button, but can only reasonably tap into the load side of the alarm switch. It is part of a "switch only" circuit board feeding many switches ("set time", "hours", "min", etc..) with 3V+ common and the return wires to the clock IC/display board are where I can splice in.