This is a simple LED blinker circuit. Once connected, the LED will flash on and off.
The Circuit
The capacitor (C1) and the resistor (R1) sets the speed of the blinking. Lower values means faster blinking.
Resistor (R2) sets the current for the LED. It's a bit high, to make sure you don't pull out too much current from the chip. If you don't think your LED is bright enough, you can use a transistor to make it brighter.
Parts List
| Reference | Value |
|---|---|
| Battery | 9V |
| C1 | 100 µF |
| D1 | Light-Emitting Diode (LED) |
| R1 | 10k |
| R2 | 10k |
| U1 | CD40106 |
The Layout
Here's an example of how you can build the circuit.
