HELP: Feedback for an eHealth wearable maker's kit about herald-hardware HOT 2 OPEN

Other existing wearable images for the current V1 prototype wearable are here: https://github.com/theheraldproject/herald-hardware/tree/develop/wearable/images

from herald-hardware.

One of our committers, Mishka @mishka-zz , has mocked up a future, larger, and slightly cheaper Maker's friendly wearable that he'll opensource the design for. You can see it on a video here: https://www.youtube.com/watch?v=-jRmQy3-sdE (Gotta love the banjo music on the video too! LOL). It's called a rayStack module.

It's a stackable design with a clickable connector. A screenshot of it's connector and its pinout is here: https://pbs.twimg.com/media/E1SLCF3X0AcSS3e?format=jpg

So Quite Raspberry Pi CM4 like in the connector allowing a variety of maker applications, but wearable and more extendable than the current V1 Herald wearable.

Pros of the new rayStack approach:-

• Slightly cheaper base board
• Stackable design without a fiddly connector
• Can swap out processor boards (E.g. Nordic's nRF52840/nRF5340 or Raspberry Pi 2040 or ESP boards
• More Maker-friendly
• More I/O ports (Herald v1 has I2C on the cable, but only 2 interrupt I/O lines spare - these are useful for low power operations, but not vital for a maker unit)
• Could support a screen with buttons, so better for interactive wearable apps

Cons:-

• No waterproof and dust proof case (Herald V1 uses a common and cheap wristband form factor and is waterproof and dust proof for use in remote areas and construction sites)
• Larger form factor
• Aimed squarely at maker's and prototypers
• Not teenager / health study participant proof

from herald-hardware.