LED Lighting For Model Buildings Modular, PC controlled on a serial link

摘要

This small module has been designed to individually control five LEDs used to illuminate model buildings. The control signal is sent over a single wire from a PC's RS232 serial port. The design allows for up to 250 modules to be controlled by a single PC, that's almost enough for a small town! Even if you only have a modest model train lay-out at home, the chances are that it will have a station and some other buildings. Rather than switching all the house lights together, it gives a much more realistic appearance if the lights can be individually controlled. In reality the light pattern changes as occupants move from room to room. The serial control module achieves this while avoiding the dreaded cabling rat's nest. Its modular design allows you to start small and easily add more modules as the layout gets more ambitious.