I got my board. And try to power on it. I use USB cable via voltmeter/ampermetr.After power on i can see blue led L flash on/off 13 times and after off.Current is 20 mA, Voltage is...

Hi, can this board send sensor data to a cloud via the gsm sim using http? if yes, is there a reason i do not see any IoT projects streaming data to a cloud with this board? FYI, the project is in an environment where there will be no Wifi...hence me wanting to use the gsm.

Hi,

Can I ask? Example if I used a external power like power bank having 20,000 with 2A input. How long will it last example if my GSM SIM808 is sending GPS data to web server every 30 secs and SMS request is upon request only.

Delivery time is different according to different shipping methods. Generally, DHL takes 3-5 days while HK post takes 15-25 business days. If you need the products urgently, we suggest using DHL will be safer and faster than other shipping methods. More shipping information can be found here: https://www.dfrobot.com/ind...
If you have any inquiries, please do not hesitate to contact us.

For the solar system, you need a solar panel, a solar manager module and a battery to power the board, it is better to use a 7.4V Lipo battery to have enough power, you can consider to use the solar panel: https://www.dfrobot.com/pro..., the solar manager module: https://www.dfrobot.com/pro...

Hello, How log does a shipment to Rio bravo, Tamaulipas? and how much would it cost by DHL?

Since you said the NET led was flashing like finding the network, but it still shows Not connected in the serial monitor? How about press the BOOT button when it gives the message.

So, this version has bluetooth working now?

I have purchased DFR0355 Leonardo Sim808. I can't compile any of the examples, receiving error message: "no matching function for call to 'DFRobot_SIM808::DFRobot_SIM808(Serial_*)'".

If "Serial" in "DFRobot_SIM808 sim808(&Serial)" is replaced by "Serial1" (which is correct I guess), it compiles but I'm not able to initialize SIM808. The same result if I go for "mySerial" no matter what TX,RX I use (0,1; 7,8; 10,11).

I've checked both IDE 1.6.5 and 1.8.5 - same results.

Any suggestions?

//#define PIN_TX 10
//#define PIN_RX 11
//SoftwareSerial mySerial(PIN_TX,PIN_RX);
//DFRobot_SIM808 sim808(&mySerial);//Connect RX,TX,PWR,

DFRobot_SIM808 sim808(&Serial);

void setup() {
//mySerial.begin(9600);
Serial.begin(9600);
[...]

You can try 1.6.x IDE if 1.8.x not work.

Hello,

i got my
board but I have some problems with it. So I drive the board with the USB port
and an external power supply and configured it like in the wiki. When i load
the serial2serial sketch the board works fine with AT commands. I can call, receive
calls and also SMS. But when I load the “make a call” sketch it won´t work
anymore. It just say “Not connected” and that over 10 minutes. I tried with
pressing the BOOT button (like in the Wiki). I enabled the debug massages and
figured out that the SIM808 make a restart after finding the Network. So can
you tell me where is the fault?

thanks. on the code pin SDA-11 and SCK-13 is not use, do i need to define it? Also, i cant find DC-9, and CS-10 on ICSP based on the schematic of the board.

what is the tft lcd are you using and what is the code?

hello, how do i use SoftwareSerial.h in this board? What are the pins should we use?

Hello, is there a step or 3d cad file for this board?

What is the lowest power consumption possible? Can all the sim808 features be powered off until a trigger? Planning on using this in a situation where it needs to be on standby 99% of the time using very little consumption and only rarely power up everything else.

Is the Bluetooth limitation removed ?
This board is the only ones with BT antenna onboard, and the BT functionality is important. For example for Serial SPP to an android device, or if it is possible redirect the BT to the Atmega mcu for OTA fw update

Sorry for missing this message, it still need external power supply with the board 3.7V lipo battery or 6.5V lipo battery.

What is the minimum power consumption this board can accomplish?

Yes, you're right, this the features of the leonardo bootloader,