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MLKiiwy / vintage-webradio

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Amplifier #4

Open MLKiiwy opened 6 years ago

MLKiiwy commented 6 years ago

We need an amplifier to connect the speaker to the raspberry pi

See a tutorial here : https://learn.adafruit.com/adafruit-max98357-i2s-class-d-mono-amp/raspberry-pi-wiring

Available : https://www.antratek.nl/i2s-3w-class-d-amplifier-breakout-max98357a?gclid=CjwKCAjw_47YBRBxEiwAYuKdwwXK7DSs6x759uFFdiNU_WWJy2tWmzUApIs01ioKJP_2kyLlSFYdlBoCbMsQAvD_BwE

And for a speaker : https://www.kiwi-electronics.nl/speaker-3-inch-diameter-4-ohm-3-watt?search=speaker

MLKiiwy commented 6 years ago

Finally go to a mono amp : https://www.adafruit.com/product/2130

Be carefull, to connect to raspberry pi zero, you need to use PWM output with maybe a filter, see here : https://learn.adafruit.com/adding-basic-audio-ouput-to-raspberry-pi-zero

MLKiiwy commented 6 years ago

Volume control : http://blog.amnuts.com/2017/01/11/rotary-volume-control-for-the-raspberry-pi/