i looked for prices and product online i fould i can get one for 10 to 15 $
then i thought of making one...and i made it for 3 $...
that is how easy it is...so dont buy an arduino!! make one...
when i was making my arduino, i had to refer somany websites and tutorials to get it right! so i hav just compiled one that contain all the necessary files and instructions!
Step 1: Components
ceramic disc capacitor 22pF (22 pico Farad) (quantity-2)
ceramic or polyester capacitor 100nF (100 nano Farad - or 0.1 micro
electrolytic capacitor 100µF (100 micro Farad) (quantity-2)
10µF (10 micro Farad)
diode 1N4148 (quantity-2)
2.1mm. DC power jack
ATMEGA8 (or ATMEGA168)
Tension Regulator 7805C
male pin header 2x3
female pin header 1x8 (quantity-2)
female pin header 1x6 (quantity-2)
right angle pin header 1x3
right angle pin header 1x2
leaded inductor 100µH (100 micro Henry)
LED 3 mm. (quantity-4)
16 MHz crystal
Resistor 1kohm (1.0 kilo ohms) (quantity-5)
Resistor 4k7ohms (4.7 kilo ohms) (quantity-1)
Resistor 10kohms (10.0 kilo ohms) (quantity-5)
Switch Tactile 6x6 mm., 4 terminals
D-SUB CONNECTOR 9 PIN FEMALE RIGHT ANGLE PC
jumper for 0.1" header (quantity-2)
if you are planing to etch your own PCB then you will need your copper board, a laser printer and drill bits and bla bla bla..you can check out this
Step 2: Making the Board
i have also attached the Eagle files for double side board!(release_arduino_rs232_v2)
once the board is etched drill the holes and you are ready to start.
Step 3: Assembling the Components
all files are also in arduino_mycrobonics.zip