Step 18: Assembly (1)
Main box of electronics assembled underneath the polycarbonate oval.
RFID reader can be seen underneath the polycarbonate and the little tray can be seen attached to its upper surface to locate the RFID "bricks."
This could be a dish, a wooden salad bowl or anything you like really so long as the base is narrow so the RFID brick always falls down so it comes to rest directly over the RFID reader.
Red Arduino reset button also can be seen bottom right.