The Apple Watch has a new feature in watchOS 10 that enables direct pairing of speed and cadence sensors for more nuanced bike ride tracking. We go hands-on with the feature.

The camshaft position sensor gathers information about the vehicle's camshaft speed and sends it to the vehicle's engine control module (ECM).

First, [Limpkin] opted to implement the whole sensor in hardware. The front end is quite different — an op-amp with 84 dB of gain followed by an automatic gain control (AGC) stage built from a ...