Breath Training Game for Healthy Lungs

Calmer breathing, stress reduction can be improved with Inhale and exhale exercise. How about playing a game that will teach proper breathing technique.
Using pressures sensors housed inside a ventilated cup to detect breath of air flow, duration, strength, and frequency of inhale and exhale can be measured. Temperature sensor can also detect type of breath - cooler air blowing through nose or hot breath via open mouth.
Data relay through micro-controller with Bluetooth (Arduino 101) to mobile phone or desktop running a Unity game engine.  Create a fun game based on breath data where player can match the expanding shrinking balloon. Or blow the virtual horn to strengthen the lungs.

Check out complete project on Hackster.io 

Interactive Bike Motion lights Controller and Display

• Colorful LED patterns flashes and scrolls responds to bikes motion - Color change over vibrating bumpy road. Waving and turning. Accelerating  and braking.
• Control light patterns using smartphone over Bluetooth. Display speed / distance
• Speedometer and tachometer display.  Tracking distance traveled / health exercise counter.
• Safety night riding  with added breaking  lights,  turning signals, and headlights.

 Check out build instructions on Hackster.io