MP3/WAV/MIDI/OGG 를 플레이 할 수 있는 MP3 플레이어 모듈 입니다.This breakout board is the ultimate companion for
the VLSI VS1053B DSP codec chip. The VS1053 can decode a wide variety of audio
formats such as MP3, AAC, Ogg Vorbis, WMA, MIDI, FLAC, WAV (PCM and ADPCM). It
can also be used to record audio in both PCM (WAV) and compressed Ogg Vorbis.
You can do all sorts of stuff with the audio as well such as adjusting bass,
treble, and volume digitally. There is also 8 GPIO pins that can be used for
stuff like lighting up small LEDs or reading buttons.
All this functionality is implemented in a light-weight SPI interface so nearly
any microcontroller can play audio from an SD card. There's also a special MIDI
mode that you can boot the chip into that will read 'classic' 31250Kbaud MIDI
data on a UART pin and act like a synth/drum machine - there are dozens of
built-in drum and sample effects! But the chip is a pain to solder, and needs a
lot of extras. That's why we spun up the best breakout, perfect for use with an
Arduino but also good for other microcontrollers that just don't have the
computational power to decode MP3s.
The breakout is slim enough to fit on a breadboard with 1 row of holes left
over for wiring. There's 3.3v and 1.8v regulators onboard with ferrite beads
and analog filtering for quality analog output. There's a microphone input port
that you can wire up a line-in or mic to and record compressed audio. All 8
GPIO are broken out and they all have built in 100K pulldowns, simply connect
your button from the GPIO pin to 3.3V for an active-high connection. You'll
likely want to play music from a microSD card so we added a holder on-board.
And since we know so many of our customers use 5V microcontrollers like the
Arduino, we made the interface pins all 5V compliant with level shifters so you
can use the chip at 3V or 5V power/logic!
Each order comes with a fully assembled and tested breakout board, some
0.1" male header you can solder to the breakout so it plugs into a
breadboard and a bonus stereo headphone jack that will be handy when you want
to plug headphones in!
New! As of Sept 24 2013, all orders will come
with v2 which is nearly identical but now has 220uF stereo blocking capacitors
on the output. This means you can plug the output into headphones or a stereo
without risk of damage. Essentially we integrated the extra capacitors onto the
PCB itself, saving you wiring and effort! If
you have an older v1.0 which does not have the two big round silver capacitors
on board, you can drive a pair of 30ohm headphones directly from the LOUT/ROUT
pins if the 'ground' connection is tied to GBUF however this is not a line-out
connection. If you want to connect to a stereo system or powered speakers with
a v1.0 board, fit the two included 100uF electrolytic caps in series on the
LOUT/ROUT pins between the breakout and the input of the stereo, then connect
the common ground to AGND
If you just need loudspeakers, our 3.7W stereo amp
board plus two 3W 4ohm speakers will give you lots of boom and you
don't need any extra blocking caps because the amplifier has differential
inputs.
Check out our detailed tutorial & excellent Arduino
library that demonstrates everything cool about this library: playing music off
an SD card, using the GPIO pins as input/outputs, playing music using an
interrupt (so it's in the background), using the VS1053 as a MIDI synthesizer
(no SD required), and recording Ogg vorbis audio from a microphone/line-in to
SD.
·
Updated to v4 on Sept 26, 2014 - we added a
1uF capacitor on the acap pin as recommended by the datasheet.
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