SIM800L How to use SIM800L GSM Module with Arduino?[Video]

The SIM800L module, which supports a quad-band GSM/GPRS network and can deliver GPRS and SMS message data remotely, is used in the Mini GSM / GPRS breakout board. The board is compact and uses very little energy. Because of the power-saving technology, the current consumption in sleep mode is as low as 1mA. It connects to the microcontroller through a UART port and supports instructions such as 3GPP TS 27.007, 27.005, and SIMCOM enhanced AT Commands.

The SIM800L Component allows you to make and receive phone calls as well as send and receive text messages. To connect the device, a UART bus must be used, which must support both receiving and transmitting lines. The UART bus must be set to the module's default speed of 9600bps. The required connecting wires are +VCC, GND, RX, and TX.

• Supports Quad-band: GSM850, EGSM900, DCS1800 and PCS1900

• Connect onto any global GSM network with any 2G SIM

• Make and receive voice calls using an external 8Ω speaker & electret microphone

• Send and receive SMS messages

• Send and receive GPRS data (TCP/IP, HTTP, etc.)

• Scan and receive FM radio broadcasts

• Transmit Power:

  -Class 4 (2W) for GSM850

  -Class 1 (1W) for DCS1800

• Serial-based AT Command Set

• FL connectors for cell antennae

• Accepts Micro SIM Card

SIM800L Pinout

SIM800L Dimensions

Because the Arduino Uno (view new Arduino Uno) utilizes 5V GPIO, we can't connect the Rx pin on the module to the Arduino's digital pin because the SIM800L module employs 3.3V level logic and isn't 5V tolerant. This means that the Arduino Uno's Tx signal must be brought down to 3.3V to avoid damaging the SIM800L module. There are a few options, but the simplest is to use a simple resistor divider. A 10K resistor between the SIM800L Rx and the Arduino D2 would suffice, as would a 20K resistor between the SIM800L Rx and GND.

Now we're only dealing with the pins that supply power to the module. We've supplied two example schematics because there are several ways to power up the module. One employs a Li-Po battery with a capacity of 1200mAh, while the other makes use of an LM2596 DC-DC buck converter.

The SIM800L is a GSM module with a serial interface. It can send and receive text messages and receive phone calls. It can also connect to the internet and receive FM signals. The SIM800L can be connected to a microcontroller using the serial UART interface, and in the example shown below, connected to an Arduino.

The module recognizes AT commands, which can be used to do things like check signal strength, get the SIM card number, check the network connection and battery state, in addition to reading texts, and making and receiving calls.

• Remote System Monitoring

• Home Alarm System

• Remote Controlling System

• Security Access Control

• Vehicle tracking

• SMS Gateway

• Pre-paid Electricity

• SIM808, SIM900A

• SIM800L Datasheet

Chenxun Technology Group's SIMCom Wireless Solutions Co., Ltd. (SIMCom Wireless Solutions) is a wholly-owned subsidiary (HK: 2000). SIMCom Wireless Technology is dedicated to developing wireless module solutions for GSM / GPRS / EDGE / WCDMA / HS * PA, TD-SCDMA, CDMA EVDO, LTE, GPS / GNSS, SRD, and other platforms. SIMCom's wireless module shipments occupied the world's second-largest market position for the first time in 2008, according to the ABI survey report. SIMCom's wireless technology has been used in a variety of industries, including M2M, WLL, Mobile Computing, and GPS. In applications, provide customers with cost-effective customized solutions and ODM services.