MichaelMeissner
Senior Member+
I have the original Audio Board (bought in 2014) and Teensy 3.1's, and I would like to hook it up as a simple machine to play sounds for portable costume usage. At the moment, I have not soldered the Audio board to the Teensy.
I have some simple speakers, and I was wondering exactly how to hook these up. Naively, I would assume I need an audio amplifier of some sort, and plug it into the headphone jack:
Given what I have, what would I need to add between the audio board and the above speakers for either mono or stereo sounds?
Or if those speakers won't do, what would that would be fairly small and work with 3.7 lipo batteries or 5v usb chargers (1-2amps).
I saw there was a revision to the Audio board in January 2015 (I bought my board in January 2014) that increased the capacitors and added two pull-up resistors. For just acting as a wav player, would it be useful to upgrade to the new version of the board?
Finally, if I wanted to go real small, to just play recorded mono sounds, would I be able to hook a speaker up to the LC with it's DAC port and no audio board and put the sounds into const memory (assuming I can cram them in)? I realize that the LC doesn't have the processing capability of the 3.1/3.2 so I wouldn't be able to do the more complex processing, but the level shifting of A3 would allow me to eliminate extra boards.
I have some simple speakers, and I was wondering exactly how to hook these up. Naively, I would assume I need an audio amplifier of some sort, and plug it into the headphone jack:
- Pair of Adafruit Thin Plastic Speaker w/Wires - 8 ohm 0.25W: https://www.adafruit.com/products/1891;
- Pair of Adafruit Mini Metal Speaker w/ Wires - 8 ohm 0.5W: https://www.adafruit.com/products/1890;
- One or two Adafruit Breadboard-Friendly PCB Mount Mini Speakers - 8 Ohm 0.2W: https://www.adafruit.com/products/1898;
- Some number of generic passive beepers;
- Some number of generic active buzzers;
Given what I have, what would I need to add between the audio board and the above speakers for either mono or stereo sounds?
Or if those speakers won't do, what would that would be fairly small and work with 3.7 lipo batteries or 5v usb chargers (1-2amps).
I saw there was a revision to the Audio board in January 2015 (I bought my board in January 2014) that increased the capacitors and added two pull-up resistors. For just acting as a wav player, would it be useful to upgrade to the new version of the board?
Finally, if I wanted to go real small, to just play recorded mono sounds, would I be able to hook a speaker up to the LC with it's DAC port and no audio board and put the sounds into const memory (assuming I can cram them in)? I realize that the LC doesn't have the processing capability of the 3.1/3.2 so I wouldn't be able to do the more complex processing, but the level shifting of A3 would allow me to eliminate extra boards.
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