lego seismometer
Building a lego seismometer Bill of materials Bricks 4 x 2x3brick 2 x 2x4 brick 2 x 1x12 brick 2 x 1x10 brick 2 x 1x8 brick 2 x 1x2 brick 1 x 2x8 brick 1 x 1x1 brick plates 4 x 2x6 plate 3 x 2x10 plate 4 x 1x6 plate 2 x 2x4 plate 2 x 2x3 plate 4 x 1x2 plate 2 x 2x2 plate 2 x 1x1 plate 2 x 4x6 plate 2 x 1x4 plate smooth plates 4 x 1x2 smooth plates Non-lego components 1 x spring steel leaf spring (25mm x 0.152mm x 150mm) 1 x 14mm diameter magnet 1 x 5mm diameter magnet 2 x 20mm x12mm adhesive tape (eg kaptan 0.03mm, or packing tape ) 1 x coil (1200turn 22mm id 10mm high) 1 x spacer 0.5mm thick for assembly 1 x 3mm thick 50x50mm square steel washer Instructions... there are two seperate lego parts which are hinged together with the thin tape acting as weak flexures. The leaf spring is clamped between adjacent lego pieces when making the hinge piece, use a strip of card or plastic 0.5mm thick as a spacer to hold the two halves of ...