Let me start by saying that this is the part of robotics that I am very weak in. I am going to be asking some questions that are probably very simple and I know that there will be multiple answers to solve this, as there is always multiple ways to solve something in this craft.

I purchased a DC-SS503V-100 because of the native support in EZ-Builder. I have watched a video that DJ put up that shows his Wall-e functioning with this compass. I have also scoured the community pages for any information on this topic but, I haven't been able to find anything on this particular topic.

I need to figure out how to wire the dc-ss503v100 to the i2c port on a EZ-B V4. Here is what I have as connections on the back of the dc-ss503v100.

1 SCL
2 SDA
3 RX
4 TX
5 OPT
6 NC
7 NC
8 NC
9 SCK
10 SDO
11 SDI
12 +5V
13 GND
14 NC
15 GND
16 NC
17 GND
18 NC
19 GND
20 GND
21 +3.3V
22 +3.3V
23 GND
24 GND

It is my understanding that an I2C port has the following pinout

VCC
SDA
SCL
GND

It is easy enough to match up these ports, but where the question comes in is pin 21 and pin 22, and pins 13. 15. 17, 19, 20, 23 and 24. Also on pin 12.

I'll start with pin 21 and 22. It is my understanding that the V4 I2C vcc is 3.3 volts. Do I need to connect to both of these pins? My assumption is yes.

Port 12 shows +5V. Does this board require me to supply an additional +5V or is this only if you are using 5V to power the board instead of 3.3? My assumption is that the +5V or the +3.3V pins or used and not both.

There are a lot of ground pins. I assume that all of these would need to be connected to ground, or the 4th pin from the I2C port.

OR can I do the following...

I2C port dc-ss503v100 Pin
vcc ----> 22
SDA ----> 2
SCL ----> 1
GND ----> 24

Please help. This is the last component that I can put in my robot until my EZRobot parts arrive. My wife would appreciate it