Skip to main content

Experience with SIM800L GSM/2G module


In this I would like to share experience with a cheep SIM800L GSM module that I purchased from my local supplier. This is a very nice and useful module that supports GSM/GPRS using 2G spectrum.

You can also make calls and send SMSs using either AT commands or using Adafruit FONA library. You can download the FONA library from github page. Connection is very simple and a basic sketch uses only TX , RX, and RST pin. 

This module is designed to power somewhere between 3.7 to 4.8 volts but I powered up with 5 Volts external supply.

Initially I tried to give power from my Arduino UNO 5 Volt pin. It initialized, but soon I got to know that my SIM is not getting registered in network. A quick googling gives me the answer that I would need a external power source as Arduino 5 Volts pin does not have enough power so that SIM get registered. It consumes a good amount of current for network search and registration.

Also I also connected my modules GND pin to Arduino GND pins to make sure that both will have a common ground connection. This is externally important, without this my board was not responding my AT commands.





Connections are pretty straight forward

SIM800L TX ---> Arduino 3
SIM800L RX ---> Arduino 2
SIM800L RST ---> Arduino 4
SIM800L Vcc ---> 5v Ext suplly
SIM800L GND--->  GND Ext supply to Arduino GND

That is all.

Thanks for reading.





Comments

Post a Comment

Popular posts from this blog

DigiSpark ATtiny85 with HC 05 Bluetooth Module

DigiSpark ATtiny85is small but very effective breakout board. This board is very popular because of its size and easy to use offerings. If you want to know about DigiSpark visit  digistump.com  for more products information. In this blog post I will show how to connect the ATtiny85 module with HC-05 Bluetooth module and blink an LED using Android phone. For this project you would need the following components. DigiSpark ATtiny85 breakout module (1x) HC 05 Bluetooth module (1x) LED any color (1x) 220 Ohms register (1x) Breadboard  Some jumper wires  Schematics: Connections: HC-05 Tx           =>        DigiSpark  ATtiny85 P1 HC-05 Rx           =>        DigiSpark  ATtiny85 P2 LED Anode        =>        DigiSpark ATtiny85 P4 LED cathode      = >       GND via 220 Ohms register HC-05 Vcc         =>        +5 Volts Supply HC-05 GND       =>        GND Before making the connection, you must configure your HC05 Bluetooth module t
2 comments
Read more

Arduino Install Folders

Arduino files are found in 3 locations: The installation folder, the sketchbook folder, and the Arduino15 folder. The installation folder should be removed when you uninstall but the other two folders remain so you will need to remove those also to get a completely clean install. The Arduino15 folder is located at: On Mac OS X: /Users/(username)/Library/Arduino15 On Windows: Arduino IDE 1.6.5r5 and previous: C:\Users\(username)\AppData\Roaming\Arduino15 Arduino IDE 1.6.6 and later: C:\Users\(username)\AppData\Local\Arduino15 On Linux: /home/(username)/.arduino15    (a.k.a. ~/.arduino15) If you delete this folder then you will need to reinstall any Boards you have installed using Boards Manager after you reinstall the Arduino IDE. The sketchbook folder location is set in  File > Preferences  if you have any sketches or libraries that you want to save in there then back them up before removing it.
Post a Comment
Read more