Features:

LONG BATTERY LIFE. Circuit is completely turned off when not blinking.

ULTRA BRIGHT LED's

CHEAP, UNDER 20 BUCKS

VERY SMALL CONTROLLER BOX AND WIRING

WORKS ON A SINGLE 9V BATTERY

Step 1: Video

Step 2: Parts List

2 x LED's (I used car LED's working on 12v that I found in a car parts shop for under 5 bucks)

Multi-pole switch

9v battery connector

9v battery

Small solder board

555 timer ship + socket

2 x 240 Ohm resistors

1 x 100 Ohm resistor

1 x 500 Kilo Ohm resistor

1 x 270 Kilo Ohm resistor

1 x diode 1n4148 or 1n4001 (most standard diodes will work)

1 x capacitor 100 micro farad

1 x capacitor 1 micro farad

1 x capacitor 10 nano farad

Electrical wires

Housing (for circuit and battery)

Solder everything together on the solder board.

If you use ready-to-use LED's, you have to bridge the resistor in the LED casing.

When you soldered everything together, it's time put it in the housing.

It should look something like this.

I made this circuit as a request of a friend.

He painted the indicators and mounted them to his bicycle.

He is making a step by step tutorial on how he mounted the blinkers on his bike. This will soon appear on the website.