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Author Topic: sending AT commands to a siemens phone  (Read 537 times)
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hi, i m facing a problem with interfacing my arduino with a siemens s45. I cant send GSM AT commands to it sucesfully. I use a 5V to 3V level translator, so i think there is a problem with my software. I´m using the Rx Tx and GND pins for serial communication. Would anybody be so kind and help me?


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