... a "Dickie" fire brigade Unimog
was shown in the local toy dealer's showcase as a special offer. An idea was sparked: After placing this vehicle inside the layout's fire station, the PDA could be used to trigger the flashing lights and the siren...I started a minor redesign of the push button releasing the lights and the sound. An unobtrusive connector was added which internally was connected to the push button's contact points. A cable was connected to a relay which was hooked up to one of the controller boards.
The pluggable cable provides that the Unimog can
be used as both an independent toy for the kids
and a model belonging to the fire station. Furthermore
it represents the supply line for the vehicle parked inside
the fire station.
Using the appropriate command, the controller board sets off a 3V-impulse with a duration of one second for the relay which shorts the push button's contacts.
Using the appropriate command, the controller board sets off a 3V-impulse with a duration of one second for the relay which shorts the push button's contacts.