Rain Gauge Design Competition (Activity organized by HKU Faculty of Engineering and Hong Kong Observatory in 2006) http://www.cs.hku.hk/~rain/
You can find photos and videos in the sections "Schedule" and "Download".
Anemometer Design Competition (Activity organized by HKU Faculty of Engineering and Hong Kong Observatory in 2008-2009) http://www.cs.hku.hk/~wind/
You can find photos and videos in the sections "Schedule" and "Download".
Visibility Measurement Method Design Competition (Activity organized by HKU Faculty of Engineering and Hong Kong Observatory in 2011-2012) http://www.cs.hku.hk/~visible/
You can find photos and videos in the sections "Schedule" and "Download".
Lightning Detector Design Competition (Activity organized by HKU Faculty of Engineering, Hong Kong Observatory and Hong Kong Meteorological Society in 2012-2013) http://www.cs.hku.hk/~light/
You can find photos and videos in the sections "Schedule" and "Download".
Sea Level Measurement Device Design Competition (Activity organized by HKU Faculty of Engineering, Hong Kong Observatory and Hong Kong Meteorological Society in 2014-2015) http://www.cs.hku.hk/~sealevel/
You can find photos and videos in the sections "Schedule" and "Download".
Invention for Schools Competition (Activity organized by HKU Faculty of Engineering in 2015-2016) http://www.cs.hku.hk/~i4s/
You can find photos at the facebook page
Earthquake Detector Design Competition (Activity organized by HKU Faculty of Engineering, Hong Kong Observatory and Hong Kong Meteorological Society in 2016-2017) http://www.cs.hku.hk/~quake/
You can find photos and videos at the facebook page
Ultraviolet Radiation Measurement and Application Design Competition (Activity organized by HKU Faculty of Engineering, Hong Kong Observatory and Hong Kong Meteorological Society in 2017-2018) http://www.cs.hku.hk/~uv/
You can find photos and videos at the facebook page
Musical Instrument Design Competition (Activity organized by HKU Faculty of Engineering and Arts and Technology Education Centre in 2018-2019) http://www.cs.hku.hk/~music/
You can find photos and videos at the facebook page