I recently bought a new pair inline skates and I have done some modifications using an arduino, HC-SR04, JHD-162A, DHT11,LDR.
Steps : 1. Open the Skate folder. 2. You will find the skate.ino file. 3. Copy the code in your Arduino ide. 4. Make proper connections. 5. Upload the code. 6. Enjoy. Hurray!