DIY Holiday Lights - Ideas and Parallel wiring

BuddytheReow

BuddytheReow

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I've got a ton of LEDs that need to be used. I want to make my wife a small (maybe 10" tall) wooden Christmas tree with LEDs all over (not the super bright ones). I've got a 9v battery snap and plenty of hookup wire. The easy way is to wire these all in series with a resistor beforehand, but run the risk of the whole tree going out if one blows for some reason. How would I run these in parallel?

I know there are soldering kits to do this that use transistors I believe and wondering if I have to go this route as well. I see this schematic requires 4.5v so I can just throw a big resistor after the battery. I think the transistors are for voltage gain here?

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BuddyTheReow
 
So I decided to take inventory of my stuff. Found a NE555 timer chip from when I wanted to breadboard a metronome (fun project but not as useful as you'd think). A quick google search turned this up. Blinking lights that I made adjustable with a 100k pot instead of the straight resistor. Took about 20-30 min to figure out the breadboard layout. Also included a video if anyone's interested.

IMG_1332.MOV

drive.google.com drive.google.com

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This one is next on my list to try. Blinking lights, but switching between 2 different colors. I will probably work on this one tomorrow, but keeping the schematic here. If anyone wants to beat me to the punch have at it!

Edit: 2 of the resistors require .5W. Simply use (2) 1/4W, 11 ohm resistors in series.
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