Hello,
I need to connect the following SIM900 with my arduino http://shop.boxtec.ch/pub/iteadstudio/GRPS_module_DS.pdf
To connect that module i think that i can do that:
P----> ??????
Rst-----> the Reset of the arduino
Tx-----> the TX of the Arduino
Rx------> the RX of tha arduino
DT------>???????
DR------>???????
(-)------->the GND of the arduino
(+)------>the 5V of the arduino
My problem is where to plug the P (Power switch pin of SIM900 module) and the DT (Debug UART data output) and the DR (Debug UART data input).
Thanks