I’m in a hurry to finish a project. I require a shield or circuit to playback via SD cards MP3’s via a 2W 8ohm speaker. Ideally I would use “Adafruit Music Maker MP3 Shield for Arduino w/3W Stereo Amp” however it is on backorder.
My only other idea is to use the sparkfun MP3 shield which is in stock with a a 2x3w@4ohm amp via the lineout. However this is not ideal due to space constraints.
Is there anyway to dig up the amplified adafruit shield in time particularly since I believe the mega has misaligned SPI ports for the sparkfun shield. Is this true?
Thanks for this help.
The DFrobot option looks good, but it lists no output wattage. Does it have an inbuilt amplifier? I had a brief look at the chip datasheet and it listed 15mW @ 30ohm I believe. The wiki shows speakers connected but this is unusual. Can you confirm its suitable for 2w~ @ 8ohms?
The Bluetooth audio receiver appears to have no headers apart from the button which I guess could be desoldered and used as outputs on the arduino.
Yes, it uses UART for communication, so it should be compatible with the various Arduino boards. There’s a tutorial on setting it up with some sample code on the page below. We’ve also got some on shelf at the moment here in the warehouse ready to go.
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