Looking at the Memory Card:
_________________
|_ _|_ _ _|_ _ _|
1 2 3 4 5 6 7 8
- DATA - Pin 12 on Arduino
- CMND - Pin 11 on Arduino
- 7.6V - External 7.6V power (only required for 3rd party cards and knockoffs)
- GND - GND Pin on Arduino
- 3.6V - 5V pin with a voltage divider to 3.6V
- ATT - Pin 10 on Arduino
- CLK - Pin 13 on Arduino
- ACK - Pin 2 on Arduino