A model car includes an attachment member that holds a polishing film, a holding member that rotatably holds the attachment member, and an eccentric mechanism which is able to eccentrically move the attachment member. When the eccentric mechanism penetrates a floor plate of the model car and is held on the floor plate to be movable up and down, the model car is able to be self-propelled while not bearing any weight of the attachment member, the holding member, and the eccentric mechanism in a state in which the polishing film contacts the surface of the model rail.

A model car includes an attachment member that holds a polishing film, a holding member that rotatably holds the attachment member, and an eccentric mechanism which is able to eccentrically move the attachment member. When the eccentric mechanism penetrates a floor plate of the model car and is held on the floor plate to be movable up and down, the model car is able to be self-propelled while not bearing any weight of the attachment member, the holding member, and the eccentric mechanism in a state in which the polishing film contacts the surface of the model rail.

A toy vehicle with a selectively engageable gear assembly is disclosed. The gear assembly may be selectively placed in a drive position in which a first set of wheels and a second set of wheels are connected to the motor through a first gear train and a second gear train, respectively. The gear assembly may be selectively placed in a freewheel position in which the first set and second set of wheels are disconnected from the motor. The gear assembly is switched from the drive position to the freewheel position using a lever that pivots to move a gear in the first gear train to disconnect the gear and break the first gear train when a gear is moved in the second gear train to disconnect the gear and break the second gear train. Through the lever, the first and second gear trains are positioned in concert.

A model train control system providing a more realistic modeling of the movement, sound, smoke, and lighting effects of a model train is disclosed. A number of dynamic inputs are used to control such effects. Novel features include providing a dynamic variable speed compensator, a dynamic engine load calculator, automatic dynamic momentum, an adjustable train brake, spectrum control, a velocity controller, pressure sensitive effects, a voice activated dispatcher system, a train location and information reporter network, two digit addressing, a traffic control system, accessory control, a model train Central Control Module, and removable memory modules.

A model train control system providing a more realistic modeling of the movement, sound, smoke, and lighting effects of a model train is disclosed. A number of dynamic inputs are used to control such effects. Novel features include providing a dynamic variable speed compensator, a dynamic engine load calculator, automatic dynamic momentum, an adjustable train brake, spectrum control, a velocity controller, pressure sensitive effects, a voice activated dispatcher system, a train location and information reporter network, two digit addressing, a traffic control system, accessory control, a model train Central Control Module, and removable memory modules.

A system for use with an analog DC model train, the system includes a base unit to electronically communicate with a track of the analog DC model train, the base unit having a receiver; one or more microcontrollers; a potentiometer; a digital stepper motor connected to the digital stepper motor and to provide torque to turn the potentiometer; a controller to communicate wirelessly with the receiver, the controller having a control to send a command the base unit to set a first numerical value associated with a position of the digital stepper motor; the first numerical value can be retrieved by the base unit based on commands from the controller to set the position of the digital stepper motor.

A system for use with an analog DC model train, the system includes a base unit to electronically communicate with a track of the analog DC model train, the base unit having a receiver; one or more microcontrollers; a potentiometer; a digital stepper motor connected to the digital stepper motor and to provide torque to turn the potentiometer; a controller to communicate wirelessly with the receiver, the controller having a control to send a command the base unit to set a first numerical value associated with a position of the digital stepper motor; the first numerical value can be retrieved by the base unit based on commands from the controller to set the position of the digital stepper motor.

Certain embodiments may generally relate to smart robotic therapeutic devices. A modular toy may include a multiple detachable carriages. The modular toy may also include a liquid crystal display (LCD) screen mounted on a first carriage of the plurality of carriages. The modular toy may further include a bubble-generation mechanism installed on the first carriage, a container disposed on a second carriage of the plurality of carriages that is attached to the first carriage, and a robotic arm mounted on a third carriage of the plurality of carriages that is attached to the second carriage.

Certain embodiments may generally relate to smart robotic therapeutic devices. A modular toy may include a multiple detachable carriages. The modular toy may also include a liquid crystal display (LCD) screen mounted on a first carriage of the plurality of carriages. The modular toy may further include a bubble-generation mechanism installed on the first carriage, a container disposed on a second carriage of the plurality of carriages that is attached to the first carriage, and a robotic arm mounted on a third carriage of the plurality of carriages that is attached to the second carriage.

A method and an apparatus that improves the motion and sounds of a model locomotive such that they more closely represent or simulate that of a real locomotive. The motion and sounds are changed in such a way that it is more realistic when compared to a real locomotive that is pulling a heavy load.