"double flash" formation lights

Grumpy Popeye · Post by **Grumpy Popeye** » Sat Dec 29, 2012 11:15 pm

Watching Star Trek '09, I noticed that the white marker lights on the saucer do a double blink, has anyone attempted to duplicate this effect?

Mr. Engineer · Post by **Mr. Engineer** » Sun Dec 30, 2012 4:04 am

I did that effect on my board 2 years ago. But because I noticed there is another extra light sequence at the Warp pylons (just above the shuttle bay) I realised the Customer might not know how to solder so I scrapped the idea of selling my board.[/b]

MillenniumFalsehood · Post by **MillenniumFalsehood** » Sun Dec 30, 2012 4:27 am

It would be possible with a chaser kit. Just solder #1 and #2 or #3 to the same circuit and leave the rest blank. If you have one that has a variable speed setting, you could fine-tune it to your specifications.

Mr. Engineer · Post by **Mr. Engineer** » Sun Dec 30, 2012 4:43 am

Yes that is one solution until I discovered the third flashing sequence. I took a shortcut and used a microprocessor instead since I have already the timing for 1701A (Motion Picture & STVI), and NX-01. So the chip has Jus enough memory left for the timing of the JJPrise.

Grumpy Popeye · Post by **Grumpy Popeye** » Sun Dec 30, 2012 11:51 pm

When you guys refer to a chaser kit, do you mean those all included "educational" kits you can get at most electronic supply stores?

Mr. Engineer · Post by **Mr. Engineer** » Mon Dec 31, 2012 12:02 am

For me, a chaser kit is the one where the LED light up (and foes off) one by one in a sequence. Usually where I live, these chaser kits have 10 LEDs in there because of the most often used 555 timer and 4017 IC. These pair were very popular during the 90's in which I suspect, most of the Star Trek TNG props were based.

By altering the speed of the 555 timer, you can determine the speed of the LED sequence and also, the time they were 'ON' (I think)

Here is one such example:
http://www.allaboutcircuits.com/vol_6/chpt_7/6.html