I've started on my first circuit build and I'm having some newbie difficulties. My goal is to use three 555 timers, each controlled by a potentiometer, which will allow the user to create various wave patterns. The only issue I've been having with it is the output. I'd like each rising edge to allow for a quick high signal to the speaker but I think I've been going about it the wrong way. I drew this out if in case it'd be any help understanding what I've been doing:
I'd previously used three npn 2n222 transistors configured in an AND gate style but had no luck. First off, if I completely removed the first two transistors and didn't supply the third with power. The current supplied to the third transistors base was managing to flow through and power the speaker. I'm not certain on what to look out for but I believe npn transistors need to have a very large resistor value at their base to prevent too much current flow? Could that be the issue? Furthermore I'm pitching the AND gate idea since it was more of an experimental idea to see how the speaker would function if it required 3 highs. But any feedback on the trouble I was having would be great.
Lastly I'd like some feedback on how to get a quick pulse from each high output from the 555s. Instead of a continuous high I'd like for the 'whatever' to send out a pulse any time one of the 555s went high/live. Sorry for my lack of terminology and likely confusion here. I'm pretty foreign to electronics but trying my hand at it.
I'd previously used three npn 2n222 transistors configured in an AND gate style but had no luck. First off, if I completely removed the first two transistors and didn't supply the third with power. The current supplied to the third transistors base was managing to flow through and power the speaker. I'm not certain on what to look out for but I believe npn transistors need to have a very large resistor value at their base to prevent too much current flow? Could that be the issue? Furthermore I'm pitching the AND gate idea since it was more of an experimental idea to see how the speaker would function if it required 3 highs. But any feedback on the trouble I was having would be great.
Lastly I'd like some feedback on how to get a quick pulse from each high output from the 555s. Instead of a continuous high I'd like for the 'whatever' to send out a pulse any time one of the 555s went high/live. Sorry for my lack of terminology and likely confusion here. I'm pretty foreign to electronics but trying my hand at it.