This circuit provides realistic operation of the flashing signals at level railway crossings. The circuit uses six visible/infrared light phototransistors to control the operation of the flashers and can supply up to 100 milliamps for LED flashers or small incandescent lights.
http://home.cogeco.ca/~rpaisley4/GC04.html
The following are Low Power - Grade Crossing Flasher circuits based on the LM555 and LM556 timer chips. They are designed to drive Light Emitting Diodes but could be used to drive low current incandesent lamps.
http://home.cogeco.ca/~rpaisley4/Flashers.html
This circuit is basically the same as the 10 channel LED sequencer with the addition of solid state relays to control the AC lamps. The relay shown in the diagram requires 1.2 volts DC to activate.
http://ourworld.compuserve.com/homepages/Bill_Bowden/page7.htm#aclamps.gif
Built from three christmas light sets and one light chaser controller, this example illustrates how to make 3 track chase lights.
http://www.flashtracklighting.com/chaselights.htm
http://ourworld.compuserve.com/homepages/Bill_Bowden/page7.htm#trigger.gif
output a control signal suitable for relay depending on the light level.
http://www.spelektroniikka.fi/kuvat/valokytk.pdf
use a current compensation method to separate the modulated light pulses from ambient light.
http://www.imagineeringezine.com/PDF-FILES/40krvr4.pdf
inexpensive 8 channel lighting controller for small theatre groups or musicians, includer dimming and sequencer, sound to light, designed for 240VAC 50Hz supply
http://sound.westhost.com/project62.htm
This equipment can change the analog signal of the music and so on into the flash of the lamp.
http://www.hobby-elec.org/e_dance.htm
a circuit which controls a thyristor by software of PIC.
http://www.hobby-elec.org/e_pic6_c.htm