Fig. 1

A (left): 1. Fixture rod, 2. Wire extensions for MAX86150 ECG electrodes, power connection and data transfer, 3. Threaded aluminium end piece, 4. MAX86150 biosensor module. B (right): 1. Epoxy cast with MAX86150 biosensor module, 2. ECG electrode extension leads, 3. Data and power supply extension leads, 4. MAX32630FTHR microcontroller board for wireless data transfer to PC