I've got too many ideas to do on my own, so I want to share them with anyone who would like to help me explore the idea and design hardware for production. One big category of interesting projects is audio. I have several ideas here, but most can be done with one simple shield.
Flutter Free/Libre wireless audio system.
What is it?
A shield for Flutter with a digital audio CODEC that supports stereo audio input and output at headphone levels, with a selection of amplifiers to go with it.
Why make it?
Flutter supports data rates up to 1Mbps with sufficient range for home audio (tens of meters) and several hundred meters at something like 300kbps. This is plenty of speed for a high quality digital audio system including a very high end audiophile system for the home. At lower data rates, users could use the audio system as a digital intercom or walkie-talkie.
Additionally, home audio systems tend to be expensive and are often focused on locking users to other services. A Free/Libre hardware system will meet your needs without exploitative pricing or compromises on features.
Support for Audiophile-levels of quality. Not a really expensive CODEC/DAC (with audio the sky tends to be the limit) but not the cheapest or easiest to support CODEC/DAC either. Sparkfun for example has some published open source designs we could borrow from, but we should not select those chips simply because they already exist. Effort should be made to discuss DAC options and choose the most appropriate chip, based on requirements determined by discussion.
Should support stereo audio input and output.
At least one amplifier should be made. For my needs I am thinking of a medium power amplifier like 15w RMS 30W peak per channel. Basically I want to clone the audioengine A2 speakers.
Design stage: concept
The wireless audio system is just a concept. An appropriate CODEC needs to be selected and at least a medium power amplifier sufficient to drive something like an Audioengine A2-style speaker would
Evaluate CODEC chips.
Evaluate Amplifier options.
Evaluate speaker options.
Evaluate microphone options.
Make final decisions on chips for v1.
Design v1 and order hardware.
Test and evaluate v1 hardware.
(Anyone want to help? Anyone know anything about audio and/or PCB design?)