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(for various reasons I needed to join a mismatched pair of 18v drill and battery, annoyed at how much fun it was)
I made Franken - Bluetooth speakers. Works better than I thought. One 3rd party ryobi battery is enough for a festival week. The second Bosh lawnmower battery adaptor works fine too.
A couple years ago I got an electric lawnmower super cheap. I only discovered earlier this summer the lawnmower and accompanying weed whacker were being discontinued, and if they break in ways I can’t fix, I’ll have a 60v, 5 amp battery to ~~recycle~~ play with.
It hasn’t occurred to me to reuse the battery for some other fun project. There will be shenanigans.
Oh my, you're who I want to talk to. I have been thinking about making a speaker probably for the opposite reason you did. I want it to be quiet. Quiet as a little mouse. Do you mind guiding me towards your method? Because I am just at the beginnings, but I was wondering if the hardware does the work, or if you get the fixings and then load the hardware up with something open-source. So if you've got the time, please let me know!
Also GJ on the frankenspeaker!
Just throw a resistor on it to make it quieter.
Ah, I was seeing it as some kind of project in wait and figured I could get some advice from someone who's been there. I don't actually have a speaker system of any sort currently. I just wanted to make one for when I did the dishes or take showers. But I really dislike bass so I figured putting together a little 3 watter or something small would be fun and interesting. I also didn't realize you could just add a resistor to dampen sound but it makes a lot of sense. I haven't done anything with electronics in a long time. But I figured no better time than today to pick something back up. Ty either way, and keep on keeping on =)
I'm not the person you replied to in the first place, I'm sure they have a lot more to say than my simple advice
The volume of a sound is its amplitude, which correlates to its kinetic energy. Kinetic energy in a sound comes from the electrical energy in the speaker. You can lower electrical energy with a resistor.
Ah, snikes - apologies. I was on the end of a long pain bender (doing pretty solid today) and my whole system wasn't in one piece. I read up on it as soon as you said something and it made sense to me. Although I thought of use case between an actual speaker versus a bluetooth and between the two I said - well one would just charge slower and the other would just receive less power and sound fainter. But yeah, I don't have an actual speaker system as a whole, in any entity. I just have a laptop, and a monitor with two little tweeters built in. And then my phone. I used to give a hoot about music very much so, and be perhaps not an audiophile, but an enjoyer of volume and levels. But now I just want to listen to something, with a little volume - that I can just turn on when bathing or doing the dishes. Because I realized many moons ago I used to have a boom-box that I'd jam out to in the kitchen which made the entire process more enjoyable as a whole.
Thanks though, yet again!
What amp you use? Is it stereo?
Love it!
I still had a Tda7492p board laying around. That's a stereo Bluetooth 4.0 board with 2x50W (8-25V).