This project allows instant start sequentially but a dozen low-voltage lamps 12 V / 60 W, and makes them fade and always sequentially (but slower). This system has been designed to meet the demand of a visitor who wanted ten recessed low voltage spot in a driveway to his house, with the following function: – When crossing a light barrier by a visitor, the lights one after the other along the path before him, as to “show the way”. – After a few minutes (the visitor is supposed to have happened at the end of the alley), dimming of each of the spots, one after another in the same direction of travel, as “comet tail”. The lights dimming is not provided by the PWM, although this would undoubtedly possible, but by a simple function of discharge capacitors.
Adjusting the time of ignition or extinction
The time that elapses between ignition of each spot and the time lag between their extinction can be adjusted individually. It is thus possible to obtain a speed and a rapid start off slow speed, or vice versa. This project has three modes of operation, among which one can switch from one to another with push button SW3 / program:
– Mode 1 = Mode = Normal mode is switched – off LED D13.
– Programming Mode Mode 2 = start time – D13 LED lit.
– Mode 3 = Programming Mode extinguishing time – D13 LED lit.
If you want to change the interval start time or time of extinction you can find here on the autor page.
More photos on Facebook Fan page.
Download complet project: 10 Channel Chaser with PIC16F628A