Trying to realise pragmatic ways to connect 50+ miniature speaker sculpture and be able to control channel distribution through Arduino/MaxMSP. Can't seem to find any resources on multi-channel tiny speaker rigging with Arduino. [talking 2w 50mm size speakers]
Originally I was considering a latte panda running Max and using a set of 16channel relays and perhaps parallel shifting with 74HC595s. But maybe the speakers don't even need that power etc..
So if anyone can give me their experience and suggestions on ways forward would love to hear?
or approaches to largescale multichannel sound installations welcome too
Originally I was considering a latte panda running Max and using a set of 16channel relays and perhaps parallel shifting with 74HC595s. But maybe the speakers don't even need that power etc..
That should work. Relays are switches so it's a good way to switch analog audio signals.
...I've got a project with an Uno and 48 individually-addressable LEDs driven by special serial-shift LED driver chips. The same method could be used with regular shift registers and relay drivers.
But maybe the speakers don't even need that power etc..
If more than one speaker is on at a time, you'll need a small audio power amplifier for each speaker, and in that case you'd switch the signal to the amplifier. If only one speaker is on at a time, you'll just need one amplifier and you can switch the signal to the speakers.
There is a whole range of PAM8xxx Class-D amplifier modules for ~$1 on ebay.
They have an enable pin that can be controlled with a shift register or muxer.
The PAM8302 is the mono version. There are also stereo versions.
Leo..