I want to make an external speaker that i can easily plug in and out.
But i don’t think it’s directly connected is it? IE ground to ground, positive to an I/O pin.
So if anyone has some quick schematics of how i can easily create an external speaker it would be helpful.
I have some BSS138 N-Channel MOSFET SMD Transistor (website opens PDF file)
I also have some common radioshack NPN transistors and common diodes.
I intend to put it at the end of a 3 strand wire, like a servo wire. I couldn’t find a schematic of the botboard 2, or i wouldn’t be asking.
Boyfriend wants to use the atom to play music.
Also on a somewhat related note, How would i program the atom, so when connected to an input, to continuously output a specified note?
IE if i want the sound output to p9, to be 3500, how would i make it continuous without putting a duration in place?
He’s trying to program it to output Legend of Zelda: Ocarina of Time songs. And it’s starting to drive me nuts so i want to help him finish a bit quicker.
P.S. - For simple beeps and the like I simply a cheap radioshack speaker directly into an IO port with +4 going to the signal pin and the - going to gnd. It is not great, I know that sometimes it may be noisy… But it has worked on an Arc32 for me.
Thanks, I wonder why i didn’t notice that earlier.
You think the BSS138, and 1n4148 diodes will work?
If the BSS138 wont work, i know it’s an n-channel fet, but it works for high speed serial converters.
I also have these:
2N2222
2N4401
2N3904
Since SMD transistors don’t have much for markings i can’t really salvage any other SMD ones.
I’m not using it for simple beeps, infact i’m not using it.
My boyfriend has been using the botboard 2 to play songs. But he wants more speakers, and a smaller board.
He eventually wants to connect buttons to it and make a digital instrument of some sort… i wasn’t really paying attention.
The Atom Pro does not have the ability to make accurate musical notes. It can come close, but each note is off from perfect.
The free FlowStone program includes the entire SynthMaker suite of building blocks. Google SynthMaker to learn more. If your boyfriend wants to make music…
He’s just playing with the atoms right now.
And it’s atom specific. I’m trying to get him into robotics, but not able to really get him into it, as i don’t have a ton of spare parts.
So he’s been playing with my rover, and some servos, but it’s like playing with legos when you only have 10 pieces.
And as far as the music goes, he whistles the tune, plays the code back, and then alters it. Rinse and repeat.
But it’s holding him over until we can get more “legos” if you know what i mean.
Now then as for my previous post, will those other npn transistors or the BSS138 fets work in place of the MMBT6428?
And what about the 4148 diode, in place of the BAV16W.
The speaker we’ll be using is one desoldered from an old PCI 56k Modem. I actually have a few of these.
