Working Arduino with SimCom 7000G module

Using Arduino Networking, Protocols, and Devices
1

I'm writing a sketch using an Arduino Nano to interface with a SimCom 7000G broadband/GNSS device on a BK7000G breakout board.
At this stage i'm trying to get some sensible responses from the device, so I can connect to it using Serial Monitor and either a USB to TTY board, or by the direct USB connection on the K board.
When I power on I do get some responses:
+CPIN: READY
SMS Ready
This tells me that the device is auto sensing the baud rate and is awake.
When I send an AT to the device that is echoed but their is no OK response.

Is there anyone out there who has worked with this device and can provide some answer.

TIA

2

could you upload a schematic of the connections between the nano and the SIM700 and the code of the program (using code tags </>}

3

Post your code !

We are blind without it.

4

No schematic diagram needed, just a USB connection between the laptop running Debian Bullseye and Serial Monitor in Arduino 1.8.19, and the BK7000 breakout board.
No code needed, just trying to use the Serial Monitor to input AT modem commands into the BK7000.
In the Tool->Ports dropdown of the IDE it lists the BK7000 as having 5 USB TTY ports - /dev/ttyUSB0 thru /dev/ttyUSB4. Only 2 and 3 give any response to input through the Serial Monitor.
I have found a user manual for a BK7600 so I am trying to make some sense out of that.

5

I think I have discovered a problem with the Serial Monitor in the Arduino IDE.
I have just installed the screen utility and am now seeing the responses that I want.

6

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