I have some questions before I commit myself into RasPi DYI projects.
- What is a breadboard? The usage of it?
- Can I connect LEDs or switches (and others), with GPIO pins, without breadboaord, and/or jumpers?
- Breadboard is a must, for any projects?
Welcome to the world of RasPi DYI projects.
1) A breadbord is a solderless board for connecting electronic parts and wires. Have a look here: http://en.wikipedia.org/wiki/Breadboard
2) Yes, it is fully possible to connect LEDs and other parts to the RPI without a breadboard. You can use only wires and duct-tape or a soldering iron.
3) I would really recommend buying a breadboard as it makes prototyping a whole lot easier.
Happy DYI-ing BjB
A Breadboard makes it easier to experiment. Here is a breadboard used to connect a LED (and current-limiting resistor) to a GPIO port on a Raspberry Pi. You'll need male-to-female jumper leads.
You can get by without one if you have a soldering iron and don't mind a lot of extra work.
You have to arrange the parts so that there is a "circuit", in my picture, the current flows from the GPIO pin through the white jumper-wire into column 14 of the breadboard and along that column to the anode of the LED, through the LED, down it's cathode lead into column 15, down to row f where a resistor connects to column 30 and a black jumper back to the Pi to complete the circuit.
For more about breadboards See
The answer, if you're intending to mess about with LEDs and switches and that kind of thing is YES, it's definitely a must-have. Jumpers will allow you to "transfer" the GPIO pins to the board and then you plug in your LEDs and other components into the breadboard. You can do everything without a breadboard, but you REALLY don't want to. They are cheap and a way of controlling your wiring.