Here’s the shoppinglist to reproduce our cups:

The dual layer cup ->

Arduino Nano ->

nRF2401A (wireless transceiver module) ->

You also need:

  • 5 RGB LEDs
  • Conductive tape (Strips of copper or equivalent).
  • Some thick soft tape, to raise the conductive tape closer to the outer surface layer.
  • Paper cup (to fit into the thermos mug).
  • 4 transistors (BC846 – A NPN-transistor)
  • 4 x 10M Ω resistors
  • 15 x 680 Ω resistors
  • 1 x 100 Ω resistor
  • 1 small switch
  • 1 x 9V battery socket + Battery
  • 1 x Small vibrator (Adjust 100 Ω resistor to your vibrators preferred current).
  • 2 pieces of 1 × 15 female pinholes (to fit the Arduino Nano directly on top of the board).
  • Insulated wire (to reduce interference between each sensor and other stuff).

Solution 1:(solder it yourself)

  • A Experimental board with 15 x 11 pin-holes (you might want to make it slightly larger so that you get a nicer board than we did…)
  • … and wire, solder, tools and some other bits and pieces.

Solution 2:(Printed Curcuit Board (PCB)) – MAKE IT SMALL AS HELL!

An great improvement would’ve been to make it possible to reach the reset button! Why not solder on a push button on the outside of the inner layer!?

// TB