On the flip side, does anybody have experience with the commercially available options out there? Relatively small footprint. Maybe 4 locations with around 500 skus per location.
It's a neat hack that the AP is just a repurposed tag, but since they use 802.15.4 could the AP run on other arbitrary hardware? Like the common nRF52840 based boards.
Yes and I published firmware to do that a few years back. It was featured on this site even. Everyone doing anything for ZBS243 is building on my work since I was the only one to ever reverse engineer that chip.
> Low power (currently around 9µA with a minimum of 40 second latency)
> Even lower power when there's no AP around
> Low latency (tags can check for new data every 40 seconds)
I wonder how hard it would be to tune it for lower power consumption by intentionally making it sleep longer between updates - if I know I only want it to update every hour, can I set a schedule or at least have it only check every, say, 30m? Seems like an easy win.
Do commercial e-ink shelf labels typically have batteries that need to be replaced every N years? I guess it's not that big a deal until you have thousands of them in your store running low.
