As you already know from other projects, I like to solder small electronic DIY kits together and enjoy the evening success.
Today it was even easier: the ordered kit was already soldered to the PCB and so the digital amplifier was used directly.
I'll tell you what options you have at startup. No soldering and no knowledge of programming needed.
Although today's smartphones offer an integrated sound output from home, with such a mini amplifier can be produced with two speakers stereo sound. So if you want to play in the party your playlist, you can safely do without headphones and start the little music.
You can connect up to two loudspeakers to the outputs R + L OUT. The volume can be influenced by the power supply: already with 4.5V can operate the amplifier. The maximum volume is 12V (18V is the maximum power). Despite the use of my mini speakers, I had a good sound experience.
Note that the speakers also have (+) and (-) and are correctly connected to R- or L-OUT.
In my opinion, the mobile music supply in the park could also be ensured via a solar panel.
As a tool we recommend a Phillips screwdriver, a wire stripper to shorten the cable ends, an audio line cable to transfer the music source to the amplifier and a power jack adapter.
Data sheet from TDA7297 here or more details here.
For 2 Euros a real surprise. Nice, would still be a pretty case: if you want to offer your 3D-print template, I recommend this in the post.
Update 07.08.2018I got these speakers come with 8 ohms, 10 watts and both with initially simple, short jumper wire connected: a sufficiently loud for my ears sound for low volume volume with low clinking at full volume.
Update 25.08.2018Armed with a cardboard box, compass and scissors, I cut out the round cutouts of the two loudspeakers from the box and fastened the loudspeakers and the module with hot glue.
With a DC Barrel Jack> USB cable and a 5V power bank (the module can not handle more than 12 volts) I have such a mobile jukebox on the go. Not waterproof, but it does not matter.
For the optics still a lot of magnetic paint on the box painted on and so I can attach even with small magnets sticky notes on it or attach the jukebox to a magnetic wall.
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