Serial monitor

Using Arduino IDE 1.x
1

Hello.
I am new. I connected a BMP 180 sensor to Arduino.
Problem: when open Tools and Serial Monitor, I see on screen xxx???xxx???x??
What is wrong. Thks for help.

2

Code? Connection diagram? Which Arduino?

3

It is a BMP 085 with Arduino UNO
Connections:
VIN to 3,5 V pin of arduino
GND to GND pin of arduino
SCL to A5 (analogue pin) of arduino
SDA to 14 (analogue pin) of arduino

The code:

#include "Wire.h"
#include "Adafruit_BMP085.h"

Adafruit_BMP085 bmp;

void setup() {
Serial.begin(9600);
bmp.begin();
}

void loop() {
Serial.print("Temperature = ");
Serial.print(bmp.readTemperature());
Serial.println(" *C");

Serial.print("Pressure = ");
Serial.print(bmp.readPressure());
Serial.println(" Pa");

Serial.println();
delay(2500);
}

When on PC in Arduino (TOOLS > Serial MOnitor) ,apperas sings as xxx???xx???? ond son one..
Thks for help

4

and what baudrate you selected in Serial monitor? in sketch you have 9600

5

Sorry for typing faults
I mean when Serial monitor open on PC, signs as xxx??xxxx?xx??? appears and moving instead the t°,pressure as on the description of the BMP.
I do not find the error.

6

I had on Serial MOnitor 38400!
I did the correction and .... it is OKE !
Thanks a lot
jc

7

you can set 115200 in sketch and Monitor

8

Please somebody help!
I'm new here. This is my first arduino board. Just learning. But i have trouble with serial.print.

image:

https://yadi.sk/i/Rm4xy-rF3Y8VqC

scetch:

void setup() {
Serial.begin(9600);
Serial.print("HELLO WORLD!"); // put your setup code here, to run once:

}

void loop() {
// put your main code here, to run repeatedly:

}

and on serial monitor i get this:

⸮xxx⸮x⸮x⸮x⸮⸮xx⸮x⸮x

My board nano (Nano3.0) AVGA325P
Arduino ver. 1.8.5

9

did you set the baud rate in Serial Monitor to 9600 baud of Serial.begin()? it is better to use 115 200 baud.

10

Juraj:
did you set the baud rate in Serial Monitor to 9600 baud of Serial.begin()? it is better to use 115 200 baud.

Tryed that. The same.

11

Thought thats related to my laptop win7 x64. Tried on other laptop with linux and the same problem. It may be that this board nano 3.0 is not working correctly with existing software as it does nano 2.2 or older? Or I'm wrong....?