Which battery suitable for GPS/GPRS/GSM V3.0?

Community General Discussions
1

Hi all,

I can send the message to phone via the GPS/GPRS/GSM shield with inserted SIM card. I still using the 7.5V,350mA powers supply. However, from the 5-6 times trying, only 2 times success.I suspect should be the sim card line not good or what?

next,since I want tested the shield’s GPS fucntion at outsdoor. I require a portable power supply. May I ask is the portable battery of 9V sufficient to supply the combination of GPS/GPRS/GSM shield and Arduino Uno R3 apart from the recommended Lithium battery charger? If I want interface them with LCD as well, is 9V sufficient too?

Thanks for prompt reply.

Best regards,
JJ

2

Are you asking about the GPS/GPRS/GSM Arduino Shield (RB-Dfr-190)? The shield by itself uses 100mA, so the 7.5V (350mA) power supply and 9V batteries might not be powerful enough to power your whole project. For a 9V battery, is it preferable to use less than 50mA…

We would recommend trying with another power supply that can provide more current, such as this 12V 2A model.

If that works well, we would recommend using this 12V 160 mAh NiMH battery for the outdoor version. Battery connector. Barrel adapter.

There are also some lithium batteries that can be used instead. Which one do you see is the recommended one?

3

Hi Jeffrey,

Thanks for reply. =)Yup, my model is GPS/GPRS/GSM Arduino Shield (RB-Dfr-190).
However, last time i tried it with power supply of 9V (350mA) power supply. The LEDs of NET blinks faster than 7,5V(350mA). In addition, the power chip MIC29302 getting hot faster, that is why I choose use 7,5V(350mA). So far, all the LEDs of shield light on, can make call, but when sending SMS, it success 2 times out of 7 tries. May I ask what is the reason causes it fails to send SMS? Is the SIM card lines not good or the power supply not enough?

Another question is was it safe to use those power supply above 7V, like 12V? Since I really worry my shield get burn as the the power chip MIC29302 getting hot faster previoulsy.I saw some forum where most of users choose 7.4V/2000mA lithium. is it okay if the power supply up to 12V and 2A as you recommended?

Currently, I got another power adapter whose power is 12V/1000mA. Is it suitable?

Besides that, since I want tested at outdoor to get GPS data, I have few choices of lithium battery due to the 9V battery is insufficient because 9V battery that has only 300mAh. The choices are below:

  1. 11.1V 1200mAH 25C Lipo Battery
  2. WLtoys V912 RC Heli Spare Part-20-2s 1000mAh Upgrade Lipo Battery (7.4V/1000mAh )
  3. MJX F49 Spare Part-15-2S 7.4v 1500mah Lipo Battery

Do you think which is more suitable?

Really thanks for reply. Appreciated :slight_smile:

Best regards,
JJ

4

The DFRobot wiki for the product says that the recommended power is

So, it should be okay to use 12V or 11.1V with the shield. However, it is better to use lower input voltage when possible, so either of the two 7.4V LiPo batteries (options 2 and 3) would be better than the 11.1V battery (option 1).

As for the problem about the SMS messages only going through 2 times of 7, we’re not sure. We would recommend contacting DFRobot for additional support: [email protected]

Hope this helps,

5

Hi all,

Thanks for your response. May I ask I had tried the code from dfrobot.com/wiki/index.php/G … TEL0051%29
under section of

How to drive the GSM Mode via Arduino board

There have no response to the receiver although I get the output on Serial monitor as shown in Figure shown in the page there. Moreover, when i tried the

How to drive the GSM Mode via USB port

It works fine as the receiver receive my message.

Thanks for reply.

Best regards,

JJ

6

Did you adjust the switches the way that it’s explained at the beginning of the example code?

// #        1. Turn the S1 switch to the Prog(right side)
// #        2. Turn the S2 switch to the Arduino side(left side)
// #        3. Set the UART select switch to middle one.
// #        4. Upload the sketch to the Arduino board
// #        5. Turn the S1 switch to the comm(left side)
// #        6. RST the board

If that doesn’t work, we would recommend again to contact DFRobot for additional support: [email protected]

Hope this helps,