I'm an engineering student (ChemE), just starting to get in to electronics and electrical engineering. Next semester I'm planning on adding an electrical engineering minor, but I wanted to get some hands-on experience first, so I'm about to build a bluetooth speaker, as shown below (sorry if anything about that diagram is unconventional):
Before I start soldering, I'd like to know if I've made any egregious/obvious errors. I have all of the components for this build already, but I'm fine buying new components if I've messed things up.
On the bottom left I've shown a battery and charging port, and I just sort of connected them on the diagram, but this is all one piece in reality and already wired, and as I've charged it up and it hasn't burned my house down I assume it works fine. Then I've got a step down (12V to 5V) to power the bluetooth card and some indicator LEDs. There's a toggle switch right before the volume potentiometer to switch between that and a headphone port as input. Then I've got a ground-loop isolator, followed by my amp, and then the crossover circuit and the speakers.
I think I made sure that all of my parts are rated correctly for the current/voltage they'll need to handle.
If there are problems somewhere I don't know where, so instead of listing the specs for every part in here, if anyone wants to know the specs for a specific part just comment and I'll edit them in.
Thanks much for any help you all can give!
- I can't find any technical specs for the bluetooth card, as I'm ripping it out of this USB receiver
- The potentiometer I bought (here) has a resistance of 10k Ohms
- This is the ground loop isolator I'm using. Again, unfortunately I can't find any technical specs, as this product is intended for consumer end-use in audio systems.
- Here is the full spec sheet for the amplifier I'm using
- Both LEDs have the same specs, here is the data sheet, it lists Vf as 3.2V when If = 20mA
Sorry I couldn't find some of the information you wanted, I'll let you know if I can get my hands on it.