(2) Learn how students are changing the world one project at a time

"Learn how students are changing the world one project at a time" is a 9-part series from a group of Hong Kong students who are using innovative engineering to improve their community and ultimately the world. Take a look at what these students have created.

Tracking Watch

Hiking is popular in Hong Kong and it is important to find an appropriate way to go back if you get lost. Many mobile apps use GPS signals to solve this problem but sometimes they cannot access GPS signals when hiking. This project aims to design a hardware device to solve this problem without using GPS signals. The device records the path and shows you how to get back (see Figure 2-1), by saving the change of accelerators and the compass in a mobile and counts the travelling path (see Figure 2-2).

Figure 2-2: Block diagram

Up to now, they can measure the temperature and the pressure properly (see Figure 2-3). Moreover, the readings can be displayed on the LCD (see Figure 2-4). The sensor then detects the rotated angle but the performance is not stable (see Figure 2-5). This can be due to a connection problem. The following videos shows the measurement, LCD display and the detection of the rotated angle.

Temperature measurement: https://www.youtube.com/watch?v=BWXj21qC_Q8

LCD: https://www.youtube.com/watch?v=qiX77n_mKvo

The detection of the rotated angle: https://www.youtube.com/watch?v=sFFRw9e9_v4

Figure 2-4: LCD

Figure 2-5: The detection of the rotated angle

Find out more about what other engineering students are developing

1. Air Cleaner Controller: a prototype to measure the air quality 

2. Tracking Watch: : a hardware device that allows you never to get lost even if you do not have a GPS signal

3. Virtual Paper: a drawing system that needs ot pens or surfaces draw

4. Parking+: a smart parking system that allows you to find the best available parking

5. Ultimate BBQ Helper: a device that allows any beginner to create perfectly cooked BBQ food

6. MyFeeder: a feeding system for pets for busy families

7. Toiletries Manager: the system manages all bathroom products through an inventory system

8. China Wizard Chess: a system that enables anyone to play chess with their voice

9. Smart Plant Watering System:  a designed system that waters plants automatically