Hope this is the correct spot on the forum and if this is repeat sorry, there is a lot of info to search through to make sure this is not. I was just working through this myself so I did not document really at all. I will try to in the future but by following the other eco board threads you can work through this. So I worked a mod to add FOC (flash on clash) to boards that do not have it. Here are 2 examples and videos how they came out. I call it eFOC (economy flash on clash). If there is a name already for it let me know. What I have found works is adding a second eco board to the first eco board. For the 2 examples I have found the optimus prime toy sword and hobbit sword (shells pictured below). I believe there is a "how to train your dragon sword" that would work but have not gotten my hands on one. The optimus needs the tip 42 trick to pull enough power through but has a nice long clash. The hobbit pushes enough power through for a quick flash. In the video you can see how each flashes differently depending on the effect you want. Both are running of of 3.7v. You will have to play round with the location of the clash sensor to determine the sensitivity and to minimize false flashes or just clashes. I did not yet do a run time or durability test. I assume the durability is the same as any eco boards. Hope this helps add a nice effect to boards out there.

First video is ultimate fx vader board with optimus prime board.


http://vid900.photobucket.com/albums...psjkboyjkb.mp4

Second video is MR Anakin and hobbit board


http://vid900.photobucket.com/albums...psleneu8ps.mp4

Here it is partly put together before it went in the above hilt for room reference.


Here is the pics the boards came out of