La plate-forme collaborative de bricolages scientifiques et pédagogiques

Description du matériel - Chemical battery

  • 1x
    Digital Watch

  • 2x
    plastic toothbrush glasses

  • 2x
    pieces of galvanised metal

  • 1x
    small sticker

  • 4x
    felt chair pads

  • 1x
    mini electrical jack (female plug)

  • 1x
    Mini electrical jack (male plug)

  • 1x
    M2 washer

  • 2x
    M3 washer

  • 1x
    M4 nut

  • 2x
    M3 wing nuts

  • 2x
    M3 x 16mm bolts

  • 2x
    pieces of thick electric wire.
    Solid 2.5 mm2 copper wire (not made of small threads)

  • 1x
    some earth

  • 1x
    watercress or any quick growing seeds

  • 1x
    plywood board

  • 1x
    strong cardboard, square (approx. 1 mm thick)

  • 4x
    fine electric wires (2 long and 2 short)

  • 1x
    contact glue

  • 1x
    self-adhesive plastic colour sheets

  • 1x
    wood paint

  • 1x
    small piece of double-sided foam tape ('bathroom' type).

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Digital Watch

Matériel original utilisé par Martin

Prix4.80 CHF
Any digital watch powered by a single 1.5 volts watch battery (button cell battery) can be used.
Depending on the model, you may need to change the way you make the electrical connections.