Hi,

I am planning to do a project where i want to read the data from the following data logger http://www.onsetcomp.com/products/data-loggers/u12-014 using arduino uno and the send the data out via Xbee. For this purpose i thought of using USB host shiled inorder to extract the data from the datalogger and xbee shield to transfer the data wirelessly. Can you please let me know whether the USB host shield can be used to extract the data from the data logger and Xbee shield is compatable with USB host shield. If not what is the correct procedure to follow to make the sensor send data wirelessly using Arduino Uno and XBee.

Thank you

Hi,

When the i2c_scanner code is used then i am getting the output as

I2C Scanner
Scanning...
I2C device found at address 0x1D !
done

When i use the attached code in the previous post then i am getting output as follows ( when the accelerometer is held at a fixed position also there are variations in the readings)

MMA8452 Basic Example
MMA8452Q is online...
0.14   0.60   -6.23   
2.76   1.12   9.38   
2.80   1.14   9.40   
2.78   1.13   9.37   
2.78   1.20   9.36   
2.82   1.18   9.42   
2.80   1.16   9.42   
2.76   1.15   9.40   
2.78   1.16   9.40   
2.81   1.17   9.43   
2.80   1.17   9.42   
2.84   1.15   9.39   
2.79   1.22   9.40   
2.80   1.23   9.43   
2.78   1.20   9.39   
2.83   1.17   9.34   
2.77   1.14   9.42   

All the values are interms of g. Normally when the accelerometer is not moving then the acceleration should be 0 but here it is showing some value. Can you please tell me why is it so?

Thank you

Hi,

I am using the following code to work with MMA8452Q accelorometer breakout(Arduino UNO) . The readings are fluctuating even when the accelerometer is not moving. Can you please verify the code and let me know what's the problem.

Thank you very much

Hi,

I am using the the break board "Triple Axis Accelerometer Breakout - MMA8452Q".Please click on the below link to find more information on the breakout board

https://www.sparkfun.com/products/10955?

Thank you

Hi,

Can you tell me which of the Xbee Shield is the better one.

Thank you

https://www.sparkfun.com/products/9607  -------- link for GSM Shield
http://www.liquidware.com/shop/show/XBS/Arduino+XBee+Shield   --------- XBee shield

Please see the above links for reference and let me know whether i can use them or not.

Thank you

Hi,

I would like to use "Cellular Shield with SM5100B" and "XBee Shield V1.4" with Arduino Uno.

Thank you

Hi,

I am using Arduino Uno. Can i connect Cellular Shield with SM5100B i.e GSM and the Xbee Shield in stack of layers with Arduino Uno. Does the GSM and XBee modules will operate on the same ports?

Thank you

Hi,

I am using MMA8452Q breakout board with Arduino Uno.I downloaded the code from below link
http://n0m1.com/2012/02/12/shake-rattle-roll-the-mma8453q-arduino/     --------in that you can see the "download" word highlighted once after you downlaod the library then in that i am using MMA8453_n0m1 datamode.

The connections between the accelorometer and the arduino are made as below
MMA8452 Breakout ------------ Arduino
       3.3V --------------------- 3.3V
       SDA ----------------------- A4
       SCL ----------------------- A5
       INT2 ---------------------- D3
       INT1 ---------------------- D2
       GND ---------------------- GND

My doubt is that *MMA8452Q:Xtrinsic 3-Axis, 12-bit and *MMA8453Q:Xtrinsic 3-Axis, 10-bit Digital accelorometer. So what parameters do i need to vary in the MMA8453Q code to reflect the difference.

Thank u very much

Hi,

I am using MMA8452Q accelerometer along with arduino uno and i am using the MMA8453Q code to operate MMA8452Q.I found that readings are not so accurate and the after 4 to 5 readings the accelorometer is repeating the same value.I dont know what's wrong kindly help me in tracing out the problem.

Thanku very much

Hi,

I have gone through the links that were stated in the post but i didn't find any example which can extract data from the ibutton logger. Can you please post any example that will get the data from ibutton logger.

Thank you

Hi,


I am trying to get the data from DS1923-F5# using arduino. I have an sample code to extract data from DS1920-F5 using the same code while changing the vlaues of the registers for DS1923-F5# is not working out. So please let me know how to do it as DS1923-F5# is a Temperature/Humidity Logger ibutton where as  DS1920-F5 is just the Temperature i button.

Thank you

Hi,

Can you please  send me an example code that uses pin interchange to wake up the arduino.

Thanku very much

Hi

Can you please tell me the settings for two xbee series1 modules to communicate with each other i/e., both should have the ability to transmit and receive data from each other.

Thanku very much

Hi,

I am using the following code now everything is displaying in decimal but i only want to display the exact value not call.Can you please let me know how to modify the following code to extract the exact data.

void loop()
{
if (Serial.available()) {
byte incomingByte = Serial.read();
//Serial.print(incomingByte, HEX);
myArray[20]=incomingByte;
int adVal = (myArray[20] << 8 ) + myArray[21];
Serial.print(adVal);

Serial.print(" , ");

}
}

Thanku very much