serial communication with gsm modem sim 800

Pins 11, 12 MIC +/- is used for microphone pins Where high means sleep mode activated, disables serial communication while low means sleep mode deactivated. This pin is used to activate/deactivate sleep mode. It is used in detecting calls and/or SMS, it remains by-default HIGH but if a call is received it gives LOW pulse for 120ms.

If it blinks once every three seconds: The module got connected to the cellular network and now it can send or receive SMS & calls.

If it blinks once every two seconds: The GPRS data connection request is activated.

If it blinks once every second: Module is running but not yet connected to the cellular network.

There is an LED which tells you about the status of your module. Ground pin, connect it to the Ground pin of Arduino This is the transmitter pin used in Serial communication This is the receiver pin used in Serial communication

Reset pin, pulling this pin low for 100 ms will hard reset the module. Voltage supply pin, the voltage at which it works fine ranges from 3.7 V to 4.4 V (recommended), but you can use 5 V with some nominal current. Here we can connect helical antenna come along with the module. Here we can connect any 3dBi GSM antenna using U.HL to SMA connector if we want wired antenna to other locations. In this module SIM800L we have a choice to choose between two antennas, First one is IPX Antenna and other is the helical antenna. GSM MODULE SIM800L PINOUTĪn antenna is required to transmit and receive signals wirelessly. Note: don’t forget to connect ground first then other connection with your Arduino to avoid module damage or make all connections first then power-up the circuit. Its operating voltage in which it works fine ranges from 3.7 V to 4.4 V (recommended), but you can use 5 V with some nominal current. Most important part of the module is the Chip made by SIMCom.

In this way you can use this module in locations where you have no internet connection and far away from your spot. You can send & receive messages using SIM800L with Arduino, even can you this GSM module with Arduino to make calls as well. SEND & RECEIVE MESSAGES USING SIM800L ARDUINO CODE.CIRCUIT DIAGRAM INTERFACING SIM800L WITH ARDUINO.

Serial communication with gsm modem sim 800