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SIM900A GSM Module-Send SMS & Make a Call using AT Commands
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- Опубликовано: 31 янв 2020
- Let's explore how to use SIM900A GSM Module to send SMS and Phone Call using AT Commands. We'll use USB-to-RS232 adapter/cable to connect SIM900A GSM Module with Computer. We can also use USB-UART Bridge instead along with PuTTY Terminal Software. In this lesson, we'll start with AT commands to test first if module works? and later we'll use advance AT Command to perform following tasks:
1. GSM Module Testing
2. Send & Read SMS thorugh GSM Module
3. Make a phone call and receive incoming call
4. Find out Network operator
5. Hangs up the Call
List of AT Commands for SIM900A GSM Module:
The SIM Module comes with Auto baud settings most often comes with 9600 baud
AT
AT+COPS? -- Know your OperatorAT
ATDXXXXXXXXXX; -- To make a call
ATH -- Hangsup the call
ATA -- Receive call
AT+CMGL="ALL" -- Read ALL Messages
AT+CMGR=1 -- Read only First Message
AT+CMGR=2 -- Read Second Message
AT+CMGD=1 -- Delete 1st Message
AT+CMGL="ALL"
AT+CMGF=1
AT+CMGS="8007770636"
-- Hello from BINARYUDPATES.COM
-- CTRL+Z
ok
![HOW TO SEND MESSAGE/MAKE CALL USING GSM AND ARDUINO || [HINDI]](/img/1.gif)
I never seen a tutor like u bro . U r another level. Awesome bro to tq so much
Hi Santosh, thank you so much 😀
Thank you very much for the tutorial. I'm looking to expound upon this with USBIP and remote SSH automation. Best of luck to you
is this GSM Module support USSD Data transfert?
Fast Blinking- Searching for the network.
Slow ( every 2-second interval) - Connected to the network
I am using airtel 4G SIM for this. I am getting the call when we use the command. But I couldn't send a message to any number. wat would be the issue? maybe it's because of my 4G SIM?
BRO its an awesome and useful video... am able to make call from my mobile to gsm but am getting some error in calling from gsm,,,, it actually says (NO CARRIER).........I Tried (ATDxxxxxxxxx) also (ATD+xxxxxxxxxx) X denotes my number... expecting ur help.. thanks in advance
hello brother there are many gsm 900 modules in amazon, can u suggest me a cheap and good model to work with my project, A good suggestion from u would be appreciated
Can you use 12v 1.5 A
Power supply into gsm900a module
Please help me
can i use jio 4g nano sim
in this module ???
No, you cant use it. It only supports 2G
No buddy
Can you please recommend to me where I have to buy this hardware stuff?
Hi Jatin, I think Robu & Tanotis is a good website in India to buy electronics components and embedded modules
how much phone can connect and send sms in one time?
continuous straght lines,not able to write AT commands...help me.!
Maybe check baud rate or connection between Tx and Rx Pins. I hope this may help you get your GSM Module working.....Good luck!
can we replace sim900a with sim800l ?!
Bro, u need to disconnect usb and reconnect
HII WHEN EVER I USED ATD COMMAND IT SHOWS NO CARRIER MESSAGE ...SO UNABLE TO CALL BUT IT SENDS AND RECIEVED SMS SO PLEASE HELP
Hi Devesh, this maybe because your last byte means termination will be wrong when you send commands to GPS Module through Serial COM Port
Using this Module can i Send FAX using windows FAX application from Win 7 ?
Hi Mr. Manish, with this module you can make arduino to connect to internet and then do whatever you wish to do. Alone this module will not help you much as its just a GSM Module for providing connectivity. I never used Windows FAX especially on Won7. I hope this may help you. Have a good day. Thanks
@@BINARYUPDATES my pc has RS232 Port can i connect it using RS232 cable ? without using arduino device ?
idea sim dont seem to work how can i buy a 2g or 3g sim
You can buy SIM card for your GSM Module from any nearby Mobile phone shop
my status led keeps on switching on and off is my hardware defective ?
Hi, i have the same problem too. may i ask if it is indeed defective?
I cant find the reset button :D
There are several version on GSM Modules out there. If your module doesn't have one then use RESET Pins on SIM900A module and connect to Ground pin to reset otherwise best way is to contact support from the brand you've purchased. I hope this may help you somehow. Good luck and best wishes!
Iam getting NO DIAL TONE, CAN YOU PLS ME..
How to send a broadcast messege?
Try to connect well n be patient, those guys are suckers, it will connect, do it again n again n wait or just liev t there
It 's a beautyfull lesson , but i'm in Africa .how may i do for get this module , in my country . Someone know a website where they sale and delivery . thanks
Thank's Genie, unfortunately I don't know any site which can guarantee the delivery of GSM Module for Arduino. Maybe you can try once eBay or something similar.
GSM 900A IS NOT SUPPORT 4G NETWORK. HOW I DO?
Unfortunately, you've to upgrade your GSM Module to support 4G Data Network
@@BINARYUPDATES how to upgrade pls help me
Bro we can call police and ambulance at a time using this
hey reply me
Sending and making call is free?
Hi Sandie, It depends on you mobile data network operator. It has nothing to do with GSM Module. It's a job of Mobile card which will be used in SIM900A GSM Module. I hope this can help. Have a beautiful day
@@BINARYUPDATES can the call be answered using the PC/laptop where the module is connected?