Is it possible to do speech output on the bangle.js watch? How loud is the speaker?
I'm interested in developing an assistive device for a blind runner. It would basically be a glorified talking clock, with the ability to speak the time, with stopwatch functions, maybe also heart rate and distance travelled. So I don't need generalised text-to-speech, just a limited vocabulary of numbers and a few extra phrases.
I have tried to implement something like this before using an Android smart watch. While these devices are very capable, the UI is quite inflexible and is usually hopelessly dependent on the touchscreen display. From this standpoint, having a bunch of chunky buttons on the bangle.js is a huge plus, and it should be possible to develop a simple UI that does not require sight.