RF MODULE CODE TO TRANSFER SENSOR DATA

Projects General Guidance
1

how to transfer bmp180 data by using RF transmitter to RF receiver module... im using RF 433mhz.. both side i want to display in lcd... can u send me the code

2

Have a look at the VirtualWire library.

Please don't SHOUT.

3

in virtual library there is code only for data which we will give directly.... but im asking sensor's data transmission

4

Why not give the sensor's data "directly"?

5

I cant get you..sorry

I used this for sending my character,..

#include <VirtualWire.h>
void setup()
{
// Initialize the IO and ISR
vw_setup(2000); // Bits per sec
}
void loop()
{
send("Hello there");
delay(1000);
}
void send (char *message)
{
vw_send((uint8_t *)message, strlen(message));
vw_wait_tx(); // Wait until the whole message is gone
}

But the problem is
I want to read BMP180 Temperature and pressure data,and it to be transmitted in RF.

In 7th line i changed as

send(bmp.readTemperature());

it shows error...

So help me find solution for it...Thank you..

6

it shows error...

And we have to guess what the error is?

OK, I've written what I think the error is on a slip of paper.

Oh, and code tags. We really like you to use code tags when you post code.

7

Arduino: 1.6.1 (Windows 7), Board: "Arduino Uno"

mm.ino: In function 'void loop()':

mm.ino:19:27: error: cannot convert 'float' to 'float*' for argument '1' to 'void send(float*)'

Error compiling.

This report would have more information with
"Show verbose output during compilation"
enabled in File > Preferences.
this is the error

8

So, assign the return value from "bmp.readTemperature()" to a variable (a float, I assume), and pass the address of the variable to your "send".