An op-amp is used as an oscillator in this LED flasher circuit. This is another circuit that can easily be built on an electronic breadboard by beginners in electronics. Click the above link for the circuit diagram.
An AVR microcontroller board will usually have a header for connecting a programmer / debugger such as the Atmel AVR Dragon. This is not the case when building a microcontroller circuit on breadboard.
This tutorial shows how to connect the AVR Dragon to an AVR microcontroller breadboard circuit for programming and debugging the microcontroller.
How to make a battery clip easy to plug into a breadboard. The same method can be applied to any wire that needs to be plugged into a breadboard.
In this review the Arduino breadboard with box of wire links is reviewed. The part number for this kit is A000032.
In this electronic circuit, when the ambient light level drops below a certain level, the LED switches on automatically.