Yes it moved the full amount (on the 10V range). My mom was disturbed (she was trying to sleep) but she came and asked me if I needed help. She also thanks you for helping me out.
Well I was hoping that I could get this done tonight. Because I have to prepare for the presentation and have some math tests happening this week too for which I haven't opened my books yet b/c of this. My mother doesn't mind. But yeah, you probably need to sleep. May you please just tell me what I need to do exactly then?
I don't mean to sound inconsiderate of my mother's feelings or anything but she's ok with it. I've closed the door of my room. She's not sleeping yet anyway, I believe. I think she's reading a book. And my brothers...well nothing seems to wake them up.
try a fifty k,
try an eighty k,
you should get to one thats a bit high,
and the meter doesnt read right quite as much,
then go back to the last one that was Ok on the meter.
Maybe you could muffle that siren?
Then we connect the sensor across between the base and neg,
be ready with a light to shine on it ... to stop the siren.
I have a 47k and a 100k. I think I may have 70k. It wasn't part of the resistor packs but my cousin who gave me this box had some resistors in it and I determined the ohms they have. And so unless I'm colour blind and can't do math, I think I have a 70k in there. I'll try the 100k too though b/c who knows how long that supposed 70k has been in that box and if it even works anymore or not?
Briefly:
when you introduce a small current from the base, through the resistor
you're touching onto it to pos,
then it opens the path though between emitter and collector,
which is where the siren is placed.
So the emitter feeds the base, and the collector.
I doubt that you will be asked to explain the action,
but you never know.
Yeah, after this is done, I'm definitely going to have to go through the whole logic behind it and ask you more questions . Of course, that will probably be later on today after you've slept and I've come from school. But thanks for the info there too. It helps.