Programming a arduino pro mini via arduino uno.

Other Hardware General Electronics
1

Hi, i tried to program my arduino pro mini like in this tutorial: http://forum.arduino.cc/index.php/topic,7571.0.html , removed the atmega328, made all the connections as in the image, set the board in arduino ide and serial port but i'm not able to program it, i get an erro: avrdude: stk550_getsync() . This is the first time it happened, in the past i already had programmed my arduino uno.

Can someone help me?

Grateful

2

Where did you get the Pro Mini?

Pro Minis often have the connections reversed (it's about 50/50 I'd say) in which case you need to flip it around. Look where it says Vcc on the Pro Mini and make sure it goes to +5V on the Arduino.

3

fungus:
Where did you get the Pro Mini?

Pro Minis often have the connections reversed (it's about 50/50 I'd say) in which case you need to flip it around. Look where it says Vcc on the Pro Mini and make sure it goes to +5V on the Arduino.

That was what i did:

vcc -> 5v
gnd -> gnd
tx -> rx
rx -> tx
drt -> reset

The board was one from ebay, a deek-robot pro mini: http://i.ebayimg.com/00/s/ODAwWDgwMA==/z/yTkAAOxyDEVScGma/$T2eC16R,!zoFJNoe9QtFBScGm,I!pQ~~60_3.JPG
http://openrcforums.com/forum/download/file.php?id=6067

Already searched in web, but can find any answer. DO you think that the problem is from my arduino uno board (it is an original and was working till now)?

4

Have you tried swapping RX and TX?

5

It worked, thanks. I had to connect rx to rx and tx to tx, which is not normal :fearful:

Another question, i uploaded this code:

int i=0;

void setup(){
  Serial.begin(9600);
}
void loop(){
  i = i + 1;
  Serial.println(i);
  delay(1000);
}

But the arduino just returns 1, what is wrong?

Grateful