At Science Hack Day 2015, together with a couple of guys from MADspace I formed a team. We worked on the “Perfect yoga experience”. The idea was to measure the heartbeat and the breathing. By focussing on the breathing the heartrate should get consistent.
And here is an impression of the complete hardware:
Here is an animation of the breathing sensor with pictures of the interfacing:
Bend sensor
NE555 timer
Coin cell operated converter
And some photos of the heartrate components:
Electrodes with connecting wires and connector
Interface pads to connect to the Myo electrodes
The Myo