[ENadyr]

Wow, some of these chips are 2.6rmb at 3k MOQ ($0.36) for an Arm Cortex m3 with BLE (and sig-mesh) support... this is wild!!! How usable is the SDK?

[bgnn]

BLE is fairly straightforward to implement. It's the compliance testing which is costly. Are these fully compliant, i.e. FCC approved?