I had nothing to do one day so, I decided to look through my Ramsey magazine for a cool project that I didn't have to buy the kit to build I found an LED chaser schematic and I googled it. There were about 199,000 results and the first one was the exact schematic I was looking for. It had everything from 3 volt astable multivibrators to LED flashers. The website link was http://www.qrp.pops.net/LEDs.asp. It had the Nite Rider chaser so, I built both. I built the one direction one according to the schematic.
At first I didn't follow the order of 3, 2, 4, 7, 10, 1, 5, 6, 9 and 11 causing the LEDs to flash out of sequence. After reorganizing them, they sequentially flashed. I tried all the other circuits. I needed a night light. I saw one at a local dollar store which seemed cool but I felt like I should build my own. I wanted randomized colors that weren't actually random and, the circuit I used was the LED light chaser.
Step 1: Get the Parts
4017 decade counter
16 pin IC socket
8 pin IC socket
2 0.01uF ceramic disc capacitors (103)
Assorted values of potentiometers
Assorted values of capacitors
10 LEDs or 3 RGB LEDs (common cathode!!!) and one regular water clear (what I used)
2 2 point terminal blocks
3 pins-breakaway headers ( I used these only for convenience. If compactness is not your goal then use a 3 pin terminal block)
9 volt battery clip
Female Cylindrical plug for other types of power (See image)
Male 9 volt power adapter with male cylindrical plug.
If building nightlight part:
SPDT toggle switch
NPN transistor (I used 2N3904)
150 ohm resistor
Photocell (photo resistor but they are becoming uncommon...Check eBay!)
Step 2: Build the Circuit
Step 3: Solder the Circuit
Step 4: Build a Diffuser.
Step 5: Use It.
This is great for dazzling your friends at that disco party next week that you're in charge of. It is just fun to play around with it when you're bored or have got nothing to do.