Grove Shield with Arduino Mega

Hi,

I bought a LinkItOne Grove shield v2 and Im interested in connecting it to my Arduino Mega. Is there a tutorial online on how to do so?

I stacked my Grove Shield v2 over my MEGA and copy/pasted the GroveSensor .ino code into Arduino IDE and got readings:

"1183178,3.94,2059.84
783269,2.61,1351.96
1143500,3.81,1988.39
972358,3.24,1683.58
"

Every 30 seconds…but Im not sure what they mean. Where can I find references to this?

I’d like to know what pins are free for me to use on the MEGA via the Shield. I understand the Grove Shield must use some pins to communicate whatever sensor data I ask of it from my MEGA. I know my MEGA has:

SIDE 1
6 Power Pins
16 Analog Pins

SIDE 2
1 AREF Pin
1 GND Pin
12 PWM Digital Pins
2 Comm Pins
8 RX/TX/SDA/SCL

END
A bunch of digital pins
1 GND
1 5V

But how do I know which pins the Grove Shield uses?

The reason is that Im going to be hooking up a TinySine Wifi Shield on top of the Grove Shield to post this data to a web server and I want to know which pins I can’t interfere with or which ones I have to re-direct in code. And eventually I might also use a GSM/GPRS shield SIM900 in order to transmit the data. I want to make sure what pins a free.

Thanks