Question re: DLM KBOP circuit and adding lights

scottnkat · Post by **scottnkat** » Sun Jul 20, 2008 1:36 pm

Hello. I am a newby here. I have the DLM Klongon Bird of Prey circuit board. The instructions mention that a 6V power supply is best for this. I was thinking of using a 9V battery for power and thought I could add other lights to the same circuit to bring the power down. I wanted to add three LEDs and the resistors. Have drawn a diagram illustrating this. Can somebody advise what rating resistors I would need? Also, advise regarding if I have this set up correctly or any corrections you think I should make would be appreciated. The link to the circuit is below. Thank you

http://smg.photobucket.com/albums/v517/ ... ircuit.jpg

Umi_Ryuzuki · Post by **Umi_Ryuzuki** » Sun Jul 20, 2008 9:02 pm

Not sure what the circuit does, so I can't advise on that.

Here is a calculator for resistors.

http://led.linear1.org/1led.wiz

scottnkat · Post by **scottnkat** » Sun Jul 20, 2008 11:00 pm

Thank you for that! That is wonderful!!

DLMatthys · Post by **DLMatthys** » Sat Aug 16, 2008 9:27 am

Umi_Ryuzuki wrote:Not sure what the circuit does, so I can't advise on that.

Blinks LEDS real fast with a small 4.7uf capacitor and 555 timer chip on a simple circuit board.

http://www.dlmparts.com/images/229_KBOP ... parts_.jpg
http://www.dlmparts.com/images/150_KBOP_Engine_dr.jpg

I can't recommend 9volt DC batteries any more...just too much power there to light LED items that normally operate at 2.5 volts. That extra energy has to go somewhere...usually in the form of heat.

Looks like your circuit diagram will work Scottnkat the 555 circuit is quite robust. But operate it for a while (all of it, the circuit board and your LED lamps /resisters) and check often for heat.