[SOLVED] multi sim card connection and firmware implementation

[uavmax]

Hi every one,

my quation is how to connect multi sim card saying 3 of them to gsm modem like sim808 or other? my second quation how to implement firmware on arduino or other microcontroller?

 

[Easyrider83]

sim card using spi. Arduino is ide, not mcu.

 

[hamidrezamaddah]

there are some chips for simcard multi plexing

 

[AskSensors]

Hello,
Here is a software Library that you can start with: https://github.com/DFRobot/DFRobot_SIM808