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Author Topic: GSM/GPRS SIM900 with arduino (Minimum System)  (Read 1040 times)
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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
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Paris
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RTFD (read the procreating datasheet), its can help you with the pin i think.

http://ftp://imall.iteadstudio.com/Modules/IM120525010_SIM900_module/SCH_IM120525010_GPRS_Module.pdf
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Thanks for your answer smiley-wink i tried to understand the DataSheet but without result.

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Thanks for your answer smiley-wink i tried to understand the DataSheet but without result.



You dont have to plug the P pin to the arduino the Dt Dr pin too if i'm right its for upgrading sofware,

http://elecfreaks.com/store/download/datasheet/rf/SIM900/SIM900_Hardware%20Design_V2.00.pdf

page 24

 
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