Construction of a nostalgic drawbridge and how it is also in use today.
The geared motor is driven by switch contacts and lifts or lowers the bridge.
LED:s and a mechanical driven barrier govern when the bridge can be crossed. The project pack is prefabricated as far as possible.
A detailed instruction with many pictures ensures successful working.
Measures: 600 x 150 x 320 mm, less batteries (2x 1,5V baby cells)