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  • posted bycpravat on 02/24/2015

    I am using it with Arduino UNO and is using normal AT comands. Is neccessary to use a softwareserial library using digital RX/TX 2 and 3 I test it sending/receiving sms, to activate outputs or to read sensors value. I test it calling. connect an microphone to the mic jack or a speaker to sp jack... Read more


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  • posted bycesarvega on 01/22/2015

    Pros: el producto cumple las especificaciones ( hace lo que dice) y es compatible con mi arduino atmega. cons: necesitas alimentar mediante un transformador externo (sino se reinicia) pero biene con la placa por lo que no necesitas un gasto adicional. relacion calidad- precio creo que esta bien.

    Impression:good (hace lo que dice);

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  • posted byDoctorEXE on 08/19/2014

    The quality is good. And the setup is very easy. Works fine on Arduino UNO, but better to use with arduino Mega because of more digital and analog pins. All setup tips and instructions you can find at http://www.elecfreaks.com/wiki/index.php?title=EFCom_GPRS/GSM_Shield If you use arduino uno and... Read more

    Impression:Very good;

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  • posted byguttih on 11/27/2013

    Great to use with Arduino Mega 2560 I used the EFCom Shield with the Arduino Mega to turn on and off, household appliance. Now I can turn on my heater via SMS, in my remote cabin before I arrive there. Here in Iceland it gets pretty cold during the winter and so we need to heat our houses. This a... Read more

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  • posted bymcsarg on 11/19/2013

    development board easy to use, powerful gprs module, which can be made developments in the area of electronic engineering geolocation solutions with low power consumption ideal for portable applications in batteries, wide-ranging, integrated antenna, and built-in power supply plate high, not sure... Read more

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  • posted byFollowman on 03/11/2013

    Full support of manufacturer's commands module. Excellent compatibility with the Arduino. Good documentation on the website Elecfreaks. Using small sketches, almost anyone can build an alarm, or remote control, data transmission. Anything on GSM. GPRS connections are also possible. Soldering of I... Read more

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  • posted bylautarox on 02/01/2013

    The module comes from the elecfreaks GSM module. They have a tutorial on how to set it up and some examples on how to use it using the arduino platform. Comes with the required power supply to make it work. Has SMS, GPRS and audio (phone calls). The sim card holder is not so good but it page has... Read more

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  • posted byvinicaog on 09/24/2012

    Easy to use. Works out of the Box. Nice Package. Very cheap and good build quality. Can find several tutorials on the internet. Comes with the 9V 1A power supply. Comes with the antena. You can use the hardware serial and software serial by just changing some jumpers. Led activity is very good be... Read more

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