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SIM800L module is a versatile small GSM module that supports the connection of voice, data, and SMS.
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SIM800L module is a versatile small GSM module that supports the connection of voice, data, and SMS.
GSM module with chip SIM00L is very popular in the community Arduino. It provides GSM (Global System for Mobile Communications) and GPRS (General Packet Radio Service) and SMS, USSD, voice and internet services support for TCP, UDP, HTTP, and FTP.
The module is supplied with a voltage of 3.4 V to 4.4 V and communicates with plate Arduino via a serial interface. The operating mode is similar to Wifi module ESP-01: module receives a serial number of preset commands for accessing functions. The module responds to AT command set. For proper feeding, you can use an adjustable source, very useful if several projects with Arduino or a small fitting with regulator LM317 - a source linear variable output.
SIM800 module to communicate with SoftwareSerial.h we use the library that allows us to use other digital pins for serial communication. For other details, such advantages or limitations examples of this library, you can access the following link:
http://cartearduino.ro/v1/link42.0
We will use terminals 8 and 7 for connections with pins TX or RX of the GSM module. We will present a program that sends commands and displays them on serial. Examples of commands:
• AT - check the functionality
• ATZ - Reset initial configurations
• AT + GCAP - Get a full list of capabilities
• AT + GMI - Request manufacturer ID
• AT + GMM model-Sky ID
• ATA - Answer incoming
• ATD - Make a call to the number in memory
• aT + CFUN - Sets functionality
• aT + CFUN? - Display current settings AT + CFUN
SIM800 command set is supported by very large, they have the possibility to receive various parameters and variations. Mobile phones operate using similar command sets.
External resources:
Use GSM modules with Arduino
AT command set supported by SIM800L
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