I built the robot car in the main picture in 2016 using meccano, an old slipper and a CamJam Edukit 3. It was controlled by a Raspberry Pi using SSH.
I built the Maplin robot arm above in December 2015 and controlled it using a Raspberry Pi.
I built a table-football score board using adafruit IR breakbeam sensors 5mm (2168). There is a screenshot below and a button for my code, which uses Pygame.