Water Rocket with Parachute

Description: First of all, the water rocket is designed when it lands it will start to slow down the speed. Therefore, a parachute is added in front of the water rocket. Secondly, we make use of the accelerometer inside Mirco:bit to create a scoring system to measure the water rocket acceleration through the whole fly process and landing. Moreover, by modifying the Mirco:bit code, we try to create another scoring system for measuring the collision force in order to determine whether the water rocket design is good or not.

School: P.H.C.  Wing Kwong College (S2)

Smart Lighting and Lux Measurement

Description: By programming the code for Micro:bit, we can measure and collect the light level data. After that, through comparison with calibration data and change the measured result into a standard measurement/unit (lux). With these technic and skills, it can apply to any smart light design.

School: South Yuen Long Government Primary School (P5)

Automatic Watering System for Plants


School: Kowloon Tong Government Primary School (P6)

Smart Campus


School: S.T.F.A. Wu Siu Kui Memorial Primary School (P5)

Visualizing the Wan Chai Old District Environmental Issues

Description: By measuring light and sound intensity using a lux meter and a sound meter, we can learn about some environmental issues of Wan Chai. Besides using professional measuring devices, we also try different applications on portable devices by using the sensor inside and comparing the measurement to the professional meter.

School: S.K.H. St. James’ Primary School (P4)

Catapult with Automatic Scoring System

Description: Firstly, we create a catapult using the principle of the lever. Secondly, we designed three ways to build the automatic scoring system. The first method is using the infrared(IR) sensor, IR sensor is a radiation-sensitive optoelectronic component with spectral sensitivity in the infrared wavelength range. Therefore, it is a good motion detector in building catapult while it senses some object hitting the sensor, scoring will be counted. The second method is using the pressure sensor. When the sensor feels pressure, marks will start to count. The third method is creating a closed circuit when the ball has enough power to make two separate tin foil together. A circuit is closed and a signal will send to micro:bit for scoring.

School: Ho Shun Primary School (Sponsored by Sik Sik Yuen) (P6)

Automatic Window Control System

Description: In this project, we make use of a raindrop sensor module and micro servo, the automatic window control system works when the raindrop sensor senses water, a window will close automatically and when the sensor is getting dry or no rain falls, the window will open automatically. the micro servo is used to control the direction of window closing and opening. We have also modified the first design accordingly to fit different situations for example by adding a rope.

School: Lok Wah Catholic Primary School (P5)

Aquaponics Measurement with Mirco:bit


School: TWGHs C. Y. Ma Memorial College (S1)

Photosynthesis in Aquatic Plants

Description: We apply Neopixel LED strips in this photosynthesis experiment. By coding the number of LEDs used and matching them with different colours of the strips as the colour and brightness of each Neopixel LED strip can be controlled independently. Therefore, using LED strip lights can assist in the growth of indoor plants and manage the colour of lights for plants for observation.

School: Ying Wa Girls’ School (S1)