Raspberry Pi for wireless?
It was a random thought and would be beyond my ambition (if not skill) to make work, but...
Would it be feasible to build a Raspberry Pi into the body of a guitar or bass, wire it with a DAC cable to USB, put another Raspberry Pi connected to the amp the same way, and connect the two via 300N wireless on 5GHz band? I wouldn't even expect to need custom software or drivers, I believe everything needed already exists.
And, yes, you could set it up so you could use a Bluetooth keyboard and display over Bluetooth or wireless, and sit around backstage or in a van using your instrument to play games.
I ask because I have a friend who is trying to find a project to work on with his son that uses Raspberry Pis, they also are both just starting out on guitar, which would increase his son's interest. I would even use them myself if the latency was under 5ms.
If you can figure this out, give me a call.
I did a quick read on the DAC cable, and I'm not sure if/how it would work, but I think that would be your major bottle-neck - getting your guitar to communicate with the transmitter in a meaningful way to send an audio signal to the receiver.
Have you yourself worked with the Raspberry Pi at all? I was curious about starting a project to control a lighting grid on my pedal board. Of course, I have no programming experience.
WiFi isn't really made for realtime audio. Read the Wikipedia on "Audio over Ethernet". And look up some of the open standards for audio networking like AES-50
Line-6 and others use the same frequencies but not the same protocols.
Kleer-net can give some good performance for audio over ethernet
but if the wifi bands are crowded you'll get buffering.
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