hi from France ! thanks for your amazing videos ! u're the best !

@AhmadLogs

2 жыл бұрын

Glad you like them!

Hola me gustaria saber si alimento la sim 800l con 4.8 y 2Amp se podria dañar?

Didn't worked on 115200 but it worked on 9600, thanks man!

@AhmadLogs

3 жыл бұрын

so nice of you

Nice useful tip. Thanks for sharing 👌👌

@AhmadLogs

2 жыл бұрын

thanks

Thank you my friend for the great explanation I only have a sim800l It was working fine all of a sudden it was flashing constantly and not connecting to the network What is the problem?

@AhmadLogs

2 жыл бұрын

You are welcome. I think this is because weak gsm signals. please change the location of sim800l

@ahmedtaher4015

2 жыл бұрын

@@AhmadLogs but the same place the signal is good Do broblem in batary

@ahmedtaher4015

2 жыл бұрын

@@AhmadLogs yes my frind the problem is signal Thanks

@AhmadLogs

2 жыл бұрын

@@ahmedtaher4015 okayyyyy

Greaaat! I've a question.I've supplied the gsm SIM 800L module with 5v of arduino and the serial monitor showed me OK when i sent the AT command but if i tried to send other commands like "AT+CMGF" and "AT+CMGS" it showed me ERROR. How to solve this problem? what should i do?

@AhmadLogs

3 жыл бұрын

some gsm module works fine on 5v. are you sending just AT+CMGF or AT+CMGF=1

@anas.ghouila

3 жыл бұрын

@@AhmadLogs yes i sent both and it still showed me ERROR..what should i do to know if the SIM 800L is connected to network?

@AhmadLogs

3 жыл бұрын

@@anas.ghouila tell me the status of sim800l led blinks. if it blinks once in every three seconds then it means it connected to the network. try to use 3.7v battery to power the sim800l.

@anas.ghouila

3 жыл бұрын

@@AhmadLogs noo it blinks constantly..should i use battery 3.7v and how much mAh?

@AhmadLogs

3 жыл бұрын

@@anas.ghouila yes, try 1000mAh or above

I get some question marks when I send the AT command :/ I'm working on Smart GPS tracker project and it doesn't find the sim card so I thought maybe the GSM module has some problems since it blinks 3 times. Damn my deadline is after tomorrow and I still can't figure it out

@AhmadLogs

3 жыл бұрын

how do you powering the sim800l. I think it is power issue. just tell me some detail about wiring of sim800l

I used battery too but when I connect the gsm to battery it blink but after 3 blinks it stop blinking, what would be the problem? Thank you for answering

@AhmadLogs

3 жыл бұрын

fully charged the battery. use short length wires from battery to sim800l

Hello sir, my SIM800l can't communicate and hear ESP32, that's why even though I can get a signal, please help

I get some other language in serial moniter i didnt get at ok or any other command please help

@AhmadLogs

3 жыл бұрын

you have issue with serial communication. verify baudrate. some sim800l modules requires 3.3v on tx pin. if that is the case you need to add level shifter on modules tx pin

led in my 800l sim module, it blinks about 6 times, 1 second each time then stops, then blinks 6 times and then stops, the action keeps repeating continuously and I can't make calls and send messages. Can you show me how to fix that? thank you

@AhmadLogs

2 жыл бұрын

it is just the power issue. check your power supply. keep the length of the power wire as short as possible.

My gsm module is not connecting to the network. The serial monitor is showing that "Network not connected". I am using 3.7v 1200 mAh battery to power it. Led starts blinking every 2s for few seconds but after again led starts blinking every second. What should i do? Or should i use other sim card? I am using bsnl sim card. Please reply

@AhmadLogs

2 жыл бұрын

any 2G sim card will work. try to use short length wires from battery to sim800l

Hi my friend, i cant connect to the network even itcant response to AT commands. It does nothing. I write AT and pressed enter and does norhing. Just blinking 7-8 times abd stops and again does that.im sure powering is great

@AhmadLogs

2 жыл бұрын

blinking 7-8 times means power issue

Hello how are you? I'm a college student and I'm doing a project using SIM 800L module and Arduino as my microcontroller but when I upload the code, the GSM stops blinking what might be the problem

@AhmadLogs

Жыл бұрын

Hello! It sounds like you are experiencing an issue with your SIM800L module when uploading code to your Arduino microcontroller. Here are some potential reasons why the SIM800L module might stop blinking: 1. Power supply: The SIM800L module requires a stable power supply to function properly. Make sure that your power supply provides sufficient voltage and current to power the module, and that it is connected properly to the module. 2. Wiring: Check that all of your wiring is correct and that the pins of the SIM800L module are connected to the correct pins on the Arduino. Double-check your wiring against the module and Arduino's pinout diagrams. 3. Serial communication: If you are using the SIM800L module's serial communication feature to communicate with the Arduino, make sure that you have correctly set the baud rate and other serial communication parameters in your code. If there is an error in the code that affects serial communication, it could cause the module to stop blinking. 4. Hardware issues: There could be an issue with your SIM800L module or Arduino board itself. Try using a different SIM800L module or Arduino board to see if the issue persists. Overall, troubleshooting issues with the SIM800L module can be complex, so it's best to approach it methodically and check each component and connection one by one. Good luck with your project!

Hello Sir, why does my sim800l module blinks rapidly?

sir sim800l connect with esp8266 but AT command not response....RX tX check ....red light blinking

@AhmadLogs

Жыл бұрын

at what rate the red light blinking?

Hello, I hope you could help me, I am using 3.7V Li-ion 18650 3200 mAh battery, 5g sim and nodemcu to test my sim800l. The serial monitor only shows initializing sim800l sometimes with foreign characters, and question marks. The network is also connected since it only blinks once every 3 seconds. Also, when I enter AT commands nothing happens, what do you think is the problem? Please help me, thank you.

@AhmadLogs

Жыл бұрын

I think you did not select the correct baudrate in the serial monitor

@weebbanana7895

Жыл бұрын

@@AhmadLogs i already select different baudrate, still not working, i also tried using Arduino, and no response in serial. Is my GSM module broken? Thank you for replying.

@AhmadLogs

Жыл бұрын

@@weebbanana7895 1. Check the connections: Make sure all the connections between the SIM800L module, the NodeMCU/Arduino, and the battery are secure and properly connected. 2. Check the baud rate: Verify that you have set the correct baud rate in your code and serial monitor. The default baud rate for the SIM800L module is 9600, so try setting it to that if you haven't already. if the problem persists then just use another module to verify it.

@weebbanana7895

Жыл бұрын

@@AhmadLogs alright thank you sir.

@weebbanana7895

Жыл бұрын

@@AhmadLogs hi, thanks for the advice. i was able to communicate the serial between nodemcu and sim800l. I soldered pins to my battery holder, it seems like i was having voltage drops making the connection unstable.

Thanks for the video. I have done my connection properly but my SIM800L keeps blinking every second and nothing is showing when I use the AT command. Please I need help.

@AhmadLogs

2 жыл бұрын

your module is not connecting to the network. use 2A and 4v power supply. sim card must be 2g. test the gsm module antenna.

@ayushpatel1176

2 жыл бұрын

@@AhmadLogs DONE BUT STRUCKED IN INITIALIZATION NEED HELP WHEN I CALL THE RINGER TINE PLAYS SO ITS CONNECTED

@AhmadLogs

2 жыл бұрын

@@ayushpatel1176 it mean there is some issue with serial communication. check your rx and tx connections.

@ayushpatel1176

2 жыл бұрын

@@AhmadLogs thanks man it worked idk how but iam able to send message but cant get any feedback from At or else

@AhmadLogs

2 жыл бұрын

@@ayushpatel1176 what response is displayed in the serial monitor when you make a call or send an sms to the module

Once I read that you have to supply 2000 mAh, you say 7800 mAh , which one is right?

@AhmadLogs

3 жыл бұрын

you may use 2000 mAh, I am using 2500 mAh. but 2000mAh is also fine

@andrealorenzetti1799

3 жыл бұрын

@@AhmadLogs can you send me a link for the purchase of this kind of battery? because i can't find a battery like that

@AhmadLogs

3 жыл бұрын

@@andrealorenzetti1799 www.aliexpress.com/item/1005002450438901.html?spm=a2g0o.productlist.0.0.3e0934b9cXSatC&algo_pvid=null&algo_expid=null&btsid=0b0a556b16201375277872780e18b5&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_

Download link? Bro

@AhmadLogs

3 жыл бұрын

I have add the download link in video description now. you may check it

Sir I have tried multiple times but my. Module blinks for 7 times and then restart automatically. I have used lm25896 buck converter but still have this issue. I have used 124k 4G Airtel sim card.is there have any problem? I have no 2G sim card.What should I do?

@AhmadLogs

2 жыл бұрын

only the 2g sim card will work.

@sataddrumukherjee9013

2 жыл бұрын

@@AhmadLogs sir is it not possible to convert 4g sim to 2g by default or through programming?

Sir it shows me Ok then after that it shows OVER-VOLTAGE POWER DOWN

@AhmadLogs

2 жыл бұрын

it is power supply issue.

bro when i open serial monitor it automatically type at cmmand continously

@AhmadLogs

2 жыл бұрын

strange. have you made any change in the code?

Mine, does not read any SIM card, what could be the problem??

@othmanelatti3753

Жыл бұрын

It doesn't support 3G/4G sim cards use 2G card

I use 18650 4200mAh 3.7v lu-ion but not work?why sir

@AhmadLogs

2 жыл бұрын

the battery you are using is fine. please use short length wire from battery to sim800l powering.

i have sim800l V2 when i am testing for AT commands nothing is shown in the serial monitor . how to solve this problem pls?

@imadhoo

3 жыл бұрын

I have the same problem,i the module seems connecting ( led OK ) but no response from AT command

@AhmadLogs

3 жыл бұрын

some suggestions. 1. check your rx and tx connections 2. check boudrate of your serial monitor 3. use a voltage divider on rx pin of sim800l

@imadhoo

3 жыл бұрын

@@AhmadLogs i bought 200 sim800l ,13 worked normally and 7 doesnt respond to at command,it can be a material problem ?!

@AhmadLogs

3 жыл бұрын

@@imadhoo some sim800l modules works strangely. I have a sim800l module that works perfectly on 5v dc. the best way to work with sim800l is always use 3.7v and at least 1000mAh battery. sometimes you need to use Level Shifter for serial communication. according to datasheet, sim800l working voltages are 4.4v to 3.4v. it also require 2A current when use function like call, sms, gprs etc.

@BrunoTechno

3 жыл бұрын

@@AhmadLogs i check all but no responde AT command

bro my 800l is not connecting to the network only even with 3.7v battery uploading a propper code

@AhmadLogs

Жыл бұрын

use a capacitor watch this kzread.info/dash/bejne/hHp31JRuidnPqJM.html

Does this gsm module work on 4g sim?

@AhmadLogs

Жыл бұрын

no

@shubhamubarhande2122

Жыл бұрын

@@AhmadLogs can we use our regular sim card which is used in mobile phone?

@AhmadLogs

Жыл бұрын

@@shubhamubarhande2122 yes, but the sim card must have 2g enabled

I am using a 4g airtel sim so what should I do as sim800l only supports 2g

@AhmadLogs

Жыл бұрын

use sim7600

Bhai agar code main ye chnges krni ho to thora idea dedain ge (agar sms se relay1 ko on kiya hai relay1 k on hone k baad 30sec k andar andar agar push button press kr dain to "ok" ka msg send ho jye aur load on rhe agar ni press hota to "error" msg send ho jye to load off ho jye

@AhmadLogs

2 жыл бұрын

you need to implement timer for this.

@webaccess8023

2 жыл бұрын

@@AhmadLogs brother delay to 30sec ka dedo gha but agar button ko push down na rakha to relay ko off kase karwana

@webaccess8023

2 жыл бұрын

Mtlb main ne ye water pump k sath lgna pump to on/off ho rha but kbi kbi water ni bahir jata to pump chalta rehta

@webaccess8023

2 жыл бұрын

Brother plz help

@AhmadLogs

2 жыл бұрын

@@webaccess8023 just start the project. if you stuck anywhere then just let me know. I will try my best to help you.

HI, I SEND AT COMMANDS BUT NO RESPOND FROM SERIAL MONITOR ANY HELP PLEASE !!

@AhmadLogs

3 жыл бұрын

you need to check your serial connection carefully. also checks baud rate in serial monitor. apply proper voltages to the module. also give me some more detail about the issue

@hhdgghghvvh6900

3 жыл бұрын

@@AhmadLogs THANX, I AM USING LIPO BATTERY 3.7 VOLT AND VOLTAGE DIVIDER FOR GSM RX ALSO THE SIM IS REGISTERING ON THE NETWORK IT BLINKS EVERY 3 SECOND AND THE BAUD RATE IS 9600 FOR GSM AND THE SERIAL MONITOR, MY ONLY PROBLEM IS NO RESPONDING TO AT COMMANDS

@AhmadLogs

3 жыл бұрын

@@hhdgghghvvh6900 1. you need to check rx and tx of gsm module. It might be damaged. 2. Have you try some other sim800l with the same configuration. 3. try to use rx pin without voltage divider

@rendijakasusanto1351

3 жыл бұрын

@@hhdgghghvvh6900 try to connect your gnd power to gnd uno

@BrunoTechno

3 жыл бұрын

I ALSO NO RESPONDING TO AT COMMANDS HELP PLEASE

Hello brother, please help me, it does not ring for me, what is the solution?

@AhmadLogs

2 жыл бұрын

tell me the issue

@mohammadatiah735

2 жыл бұрын

@@AhmadLogs Hello bro The problem is sim800L working(there light), but when i call it from my phone doesnt have broadcast. I tried alot of antennae types, and sim card 2G and 3G, but doesnt work. How can i fix it? I mean how can i get the brodcast?

@AhmadLogs

2 жыл бұрын

@@mohammadatiah735 1. only the 2g sim card will work 2. if you have inserted 2g sim card in the gsm module. then first test it by inserting it in your mobile phone. 3. disable sim card lock.

my module is blinking continuously for every sec what does it means

@hhdgghghvvh6900

3 жыл бұрын

IT DOES NOT REGISTER YET TO NETWORK

@AhmadLogs

3 жыл бұрын

Right

@anas.ghouila

3 жыл бұрын

@@hhdgghghvvh6900 what should i do to register it to network? Plz i need helpp!!

hey hi i am junior college student trying to make project using sim800l . and i want you to ask question would airtel 4g sim would work with it . plz reply

@AhmadLogs

Жыл бұрын

only 2g sim card will work

In gsm led is continuously blinking. How can i solve the problem? Sir pls pls tell

@AhmadLogs

Жыл бұрын

200% power issue

@paprighosh6063

Жыл бұрын

@@AhmadLogs how can i resolve this issue

@paprighosh6063

Жыл бұрын

@@AhmadLogs i am using 3.7v

@AhmadLogs

Жыл бұрын

@@paprighosh6063 give me the details of your battery. try a brand new battery. watch this for powering sim800l kzread.info/dash/bejne/oJiJ29CnhqvVXbw.html

IT SAY OK , BUT IT IS NOT CONNECTING TO NETWORK BLINKING 1SEC CONTINUILY

sim800 gsm module 7 time blink kar rahi hai bhai please help me

@AhmadLogs

2 жыл бұрын

7 time means power issue. use 3.7v 2000mAh battery

@Farmplus01

2 жыл бұрын

@@AhmadLogs thanks for replying me. I'm using dc buck converter, out put 3.7v. it's enough?

@AhmadLogs

2 жыл бұрын

@@Farmplus01 yes, output 3.7v is ok. try 4.0v. dc-dc buck converter lm2596 is best. which buck convertor you are using?

SIR IT KEEPS SHOWING Initializing SIM800L... please help how to fix this

@AhmadLogs

2 жыл бұрын

there is some issue with sim800l. can you give me some more details

@v2vgamingandtechno587

2 жыл бұрын

@@AhmadLogs Sir I tried everything I even changed sim800l it never connects with the network I am using Vodafone’s 4g sim

@AhmadLogs

2 жыл бұрын

@@v2vgamingandtechno587 4g sim will never works with sim800l. use 2g sim card

@v2vgamingandtechno587

2 жыл бұрын

@@AhmadLogs i didnt knew that thank you so much sir and sir where can i find 2g sim cause i am unable to find one in the market

@AhmadLogs

2 жыл бұрын

@@v2vgamingandtechno587 please contact to gsm network service providers in your area

hi bro i have an issue it gives me OK   OK Call Ready SMS Ready  this when i put the AT commend but the module doesnt works it stills flashing each second till 23 times

@AhmadLogs

2 жыл бұрын

what power supply you have used

4 channel relay arduino programing kaise karen

@ShadabKhan-er4ob

3 жыл бұрын

Please help me

@AhmadLogs

3 жыл бұрын

you need to use four arduino I/O pins connected to 4 channel relay. and turn ON and OFF these pins to control every channel of the relay module

@ShadabKhan-er4ob

3 жыл бұрын

@@AhmadLogs ni kaam blinking nahin kar pa raha hai

@ShadabKhan-er4ob

3 жыл бұрын

Plzz

@AhmadLogs

3 жыл бұрын

@@ShadabKhan-er4ob kia blinking ni ho rha. can you please explain in detail

Your source code is not working. Can you help me I'm girl Thank you. asap

@AhmadLogs

2 жыл бұрын

how can I help you

#include #define rxPin 2 #define txPin 3 SoftwareSerial sim800L(rxPin,txPin); void setup() { //Begin serial communication with Arduino and Arduino IDE (Serial Monitor) Serial.begin(115200); //Begin serial communication with Arduino and SIM800L sim800L.begin(9600); Serial.println("Initializing SIM800L..."); delay(1000); sim800L.print("AT+CMGF=1 "); //SMS text mode delay(1000); } void loop() { while(sim800L.available()){ Serial.println(sim800L.readString()); } while(Serial.available()) { sim800L.println(Serial.readString()); } } /* AT Check Sim is ready or not AT+CPIN? */