I have built many arduino projects for different clients and for my self-pleasure for about 5 years. basic projects that I have done incorporate many Arduino base sensors and modules. other than that have done complex pcb designing using eagle and diptrace. i got skills in Matlab, python and opencv. I have done many image processing projects as well. please go to following links to find the demo videos of the projects that i have done. 1) https://www.facebook.com/lakithasahan.hettiarchchi/videos/758366787545903/ 2) https://www.facebook.com/lakithasahan.hettiarchchi/videos/73127222 0255360/ 3) https://www.facebook.com/lakithasahan.hettiarchchi/videos/972914779424435/