Gayan Soyza
Active Member
Here is another Kindergarten project of mine. It’s called programmable third brake light flasher. Looks like simple but need to think in all round.
Operation
When brake is applied the circuit will flashes the third brake light couple of times & stays continuously on until the driver releases the brake. This will make other drivers attention due to the flashing effect with a safety manner.
Number of flashes, flash on time and flash off time can be adjust by the user with the two buttons.
Here nothing is illegal so I didn’t get a problem. Also this is not for commercial I did just for fun.
**broken link removed**
This circuit designed for LED third brake lights & not for incandescent (filament) third brake lights.
I got several problems when calculating the pulse delay for incandescent bulbs. Because these bulbs take time to switch on & off. They won’t accept high speed switching. It’s easy to calculate a long delay but if the PULSE OFF DELAY time is too long in a traffic condition it will meet some problems. If the pulse delay time too short it won’t show you the blinking effect because of poor turning on time with these bulbs. So I escaped from incandescent bulbs. Modern all automobile lighting systems using LED’s. So I also shifted to high speed LED’s.
The delays are calculated to the best timing parameters. Can use all this calculated delays in the table without any problem.
The Zip file contains how to adjust routine.
Operation
When brake is applied the circuit will flashes the third brake light couple of times & stays continuously on until the driver releases the brake. This will make other drivers attention due to the flashing effect with a safety manner.
Number of flashes, flash on time and flash off time can be adjust by the user with the two buttons.
Here nothing is illegal so I didn’t get a problem. Also this is not for commercial I did just for fun.
**broken link removed**
This circuit designed for LED third brake lights & not for incandescent (filament) third brake lights.
I got several problems when calculating the pulse delay for incandescent bulbs. Because these bulbs take time to switch on & off. They won’t accept high speed switching. It’s easy to calculate a long delay but if the PULSE OFF DELAY time is too long in a traffic condition it will meet some problems. If the pulse delay time too short it won’t show you the blinking effect because of poor turning on time with these bulbs. So I escaped from incandescent bulbs. Modern all automobile lighting systems using LED’s. So I also shifted to high speed LED’s.
The delays are calculated to the best timing parameters. Can use all this calculated delays in the table without any problem.
The Zip file contains how to adjust routine.