868 MHz monitoring

rokj · June 19, 2012, 10:52am

Hi,

I have several power (electricity) monitor adapters which operate on 868 MHz and have remote controller which displays data.

But I would like to collect data on my PC, so I am considering buying
seeedstudio.com/depot/rfbee- … th=139_140
or just
seeedstudio.com/depot/grove- … th=139_140

Would some this be ok for sending, receving data through UART or USB to my PC?

(I am using Voltcraft Energycount 3000).

Thank you and kind regards,

Rok

deray · June 20, 2012, 6:44am

Hi there ,
seeedstudio.com/depot/uartsb … ?cPath=109
seeedstudio.com/depot/rfbee- … th=139_140
These two wil be better,you just put the RFbee on UarSbee , and connect to your PC with an USB wire . Open the Uart monitor,then can send and receive data in 868MHz or 915MHz.

Deray

rokj · September 21, 2012, 2:47pm

I have bought what you have suggested and connected to my PC.

I tried getting data with moserial (linux) and simple python example, but without success.

I am using following code:

import serial

ser = serial.Serial('/dev/ttyS0', 4800, timeout=1)
ser.write("hello")
ser.close()             # close port

TX, RX leds are dark all the time when executing the code.

What baud rate should I use?

Could you provide me simple example for sending, receiving data (in any programming language)?

deray · September 26, 2012, 3:38am

okay , i am using it communicate with arduino same as the wiki page of Rfbee .
here is the code , hope it can help you.

int button = 3;
String str;
void setup()
{
    Serial.begin(9600);
    pinMode(button,INPUT);
}
void loop()
{
    // receive the Rfbee date and save to String str
    if(Serial.available() > 0){
        while(Serial.available()){
        str += char(Serial.read());
        }
    }
    // send "Hello World" if the button is pressed down
    if(button){
        delay(50);
        if(button){
        Serial.print("Hello World");
        }
    }
}

By the way , before send the data with the code you write , you can try to directly open Uart monitor and test if two Rfbee can communicate by each other .

rokj · September 30, 2012, 8:20pm

deray:

okay , i am using it communicate with arduino same as the wiki page of Rfbee .
here is the code , hope it can help you.
int button = 3;
String str;
void setup()
{
    Serial.begin(9600);
    pinMode(button,INPUT);
}
void loop()
{
    // receive the Rfbee date and save to String str
    if(Serial.available() > 0){
        while(Serial.available()){
        str += char(Serial.read());
        }
    }
    // send "Hello World" if the button is pressed down
    if(button){
        delay(50);
        if(button){
        Serial.print("Hello World");
        }
    }
}
By the way , before send the data with the code you write , you can try to directly open Uart monitor and test if two Rfbee can communicate by each other .

Thank you for help, but still without luck.

I only have one RFBee and 868 MHz transmitters which are sending data on 868 MHz, but I am not able to receive/recognize it on RFBee.

deray · October 12, 2012, 9:27am

Hi ,
Sorry that i miss something , you are using 868MHZ but not 915MHZ ,so you need to change the firmware first .
You can download the firmware by click here and open the sketch and change the following code at “Config.c”
EEPROM.write(CONFIG_CONFIG_ID,0x00);
change to
EEPROM.write(CONFIG_CONFIG_ID,0x03);

There is 6 kind of configs you can choose that you can know it from the datasheet of RFbee .

Deray
Catch494F(10-12-10-43-53).jpg