As the HR sensor is not reliable for sports, it can be interesting bangle.js can read from a remote BLE or ANT+ HR sensor.
Due BLE limitations a connection to HR sensor will not allow gadget bridge simultaneously.
However, ANT+ allows multiple connection,and it seems that ANT+ is supported by nRF52 series and its softdevices.
As Garmin sensors have been using ANT+ for many years, it is no difficult to find them.
Is it feasible to include ANT support? easier from BLE?
• Not to be used for any commercial or revenue-generating purpose.
• Click above for Evaluation use on any of the stack downloads for the SoftDevices that you need.
The SoftDevices are available as ANT-only (200 series) and concurrent ANT and Bluetooth (300 series), providing flexibility to serve specific product needs