[leo19980219]

Hi,everyone
I use NB-IOT SIM7000 Shield to do my project.
When I try to use example code on this website
https://github.com/DFRobot/DFRobot_SIM7000
I always get Turn ON SIM7000......
The module seems cannot turn on even I give 9V power supply.
Can anyone help me?

[robert.chen]

If you put the switch to TXRX-D7D8, can you enter the AT mode?

[leo19980219]

Hi, roboert.chen
I already do that and it doesn't work.

[robert.chen]

Can I know which country are you in and which model do you use, SIM7000C is only used for China mainland.

[kaczmarek.mateusz.dev]

Hello,
I have same problem with my NB-IOT SIM7000E Arduino Shield ;/
Here s my code:

Code: Select all

#include <Wire.h>
#include <DFRobot_SIM7000.h>

#define PIN_TX     7
#define PIN_RX     8
SoftwareSerial     mySerial(PIN_RX,PIN_TX);
DFRobot_SIM7000    sim7000;

void setup(){    
    Serial.begin(115200);
    while(!Serial);

    Serial.println("BEFORE begin()");    
    sim7000.begin(mySerial);  
    Serial.println("AFTER begin()");        
    
    Serial.println("BEFORE turnON()");    
    sim7000.turnON();
    Serial.println("AFTER turnON()");    
}
  
void loop(){
   Serial.println("INSIDE LOOP");
}

It always stops on printing 'BEFORE turnON()' - turnON() method seems not to work correctly.

I have Software/Hardware Port switched to Tx->D8, Rx->D7,
SIM card is inside the socket,
GNSS & GSM/LTE antenas are plugged in.

No idea what I am doing wrong, anyone can help here?

[robert.chen]

Hello,
I have same problem with my NB-IOT SIM7000E Arduino Shield ;/
Here s my code:

Code: Select all

#include <Wire.h>
#include <DFRobot_SIM7000.h>

#define PIN_TX     7
#define PIN_RX     8
SoftwareSerial     mySerial(PIN_RX,PIN_TX);
DFRobot_SIM7000    sim7000;

void setup(){    
    Serial.begin(115200);
    while(!Serial);

    Serial.println("BEFORE begin()");    
    sim7000.begin(mySerial);  
    Serial.println("AFTER begin()");        
    
    Serial.println("BEFORE turnON()");    
    sim7000.turnON();
    Serial.println("AFTER turnON()");    
}
  
void loop(){
   Serial.println("INSIDE LOOP");
}

It always stops on printing 'BEFORE turnON()' - turnON() method seems not to work correctly.

I have Software/Hardware Port switched to Tx->D8, Rx->D7,
SIM card is inside the socket,
GNSS & GSM/LTE antenas are plugged in.

No idea what I am doing wrong, anyone can help here?

Hi
Can I know which country are you in?

[kaczmarek.mateusz.dev]

Poland, EU

[robert.chen]

Can I know your NB-IoT service provider in Poland?

[robert.chen]

How do you power this module? Did you use an external power? Because it needs enough power.

[kaczmarek.mateusz.dev]

Power: for now shield is plugged into my Arduino Uno (shield pins to Arduino pins). Arduino is connected to my PC with USB A-B. I think there is no problem with power supply, because NB-IOT SIM7000 module is able to get data from BME 280 sensor.

Provider: I bought standard SIM card with 30gb internet data package. Provider is Play - polish cellular telecommunications provider.