SIM800L V2 tutorial with arduino (Send SMS, Receive SMS, Make a call)

In this video, we learn how to use SIM800L version 2 with an Arduino.
We will examine how to send SMS, receive SMS, and make a call.
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/ @miliohm
Full sketch and wiring diagram
miliohm.com/si...
Music :
"LAKEY INSPIRED - Chill Day" is licensed under a Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)
Music provided by BreakingCopyright: • [Non Copyrighted Music...

[@82jimrock]

Hi...are both modules reliable for industrial applications? Have u ever tested these GSM modules by running them for some weeks or months?

[@nitinsawant]

this tutorial does not explain how to connect speaker/microphone, can you explain how to do it?

[@nellynfedejuan1212]

Great!❤❤ By the way, I wanna ask if it can send message without a Load specifically here in the Philippines. The case is I wanted to inform the receiver using sensor. If the device detects a sense, it will send a message to a mobile phone. I only want arduino to send message and thats it. I am a student and I wanted to include this onto my research device. I hope someone will notice me po. Thank You 🤗🤗

[@royjosephargumido8483]

Hindi sya makakapag send ng message if walang load yung sim.

[@nellynfedejuan1212]

@ Pwede po ba gumamit ng 4G network?

[@royjosephargumido8483]

@@nellynfedejuan1212 yes po. Pwede.

[@nellynfedejuan1212]

Ahh, sabi po kasi pg Sim800L hindi dw po gumagana. Phase out na dw kasi yung 2G na Simcard dito.

[@royjosephargumido8483]

@@nellynfedejuan1212 sim800l v2 gamit ko using globe sim card, working naman sya

[@alejandrogomezgarcia4689]

Works as a charm. Thank you

[@yllamaeoracion4574]

hello, why mine is error?

[@jeffr249]

same, did you find some solutions?

[@Ikaro]

Great video. But im working with a rele, and if the contact is continuosly closed it continues sending messages until I open the contact. How can I solve this problem?

[@yelloroo]

Hello, thank you for this great tutorial. I found datasheet of the SIMCOM chip but where can I find datasheet of the EVB board ?

[@Sporty720]

How can you make the call just by pressing a button

[@0124akash]

With out serial monitor this project is not worked. When I send 's' from mobile to 800l then 800l send sms to my mobile as reply. With out serial monitor connected.

[@BinaryCloudChaser]

Please show how to let the sim send each second a signal to my phone oder to a webside. Or how I set a time lile 1/minute 1/sec ...

[@antoniodejesusmartinezrami4654]

Didn't work for me in 2023

[@hermansoesilo8849]

Can we send SMS to multiple number? Thank you

[@miztia2755]

Hola muy buen video, tengo una consulta, por lo que vi en varios videos, en el codigo tenemos que poner el numero de telefono al que queremos recibir el SMS. Pero por ejemplo yo necesito mandarle un mensaje al SIM800L preguntandole si esta la luz prendida y que me responda SI/NO, pero yo quiero que lo puedan usar todos los integrantes o cualquier invitado, (no se si me explico) ¿no hay forma, por ejemplo de mandarle un mensaje al SIM800L, que guarde el numero de telefono desde el que recibio la pregunta y responda a ese numero ? luego si viene otra persona con otro numero de telefono distinto, manda un mensaje al SIM800L que guarde el numero y le responda a ese mismo y asi?? (no se si logre explicarme) Saludos!

[@jhintastic7941]

the module is ready but cannot send sms

[@user-jr8qu8ih7o]

Really neat explanation✌Can I send, receive sms and calls with 4g sim card?

[@aliakbarcheema1089]

I tried it by connecting module with arduino UNO but its not connecting with it ..??? Any reason please guid

[@stevanherold5497]

I dint see where yoi connect microphone and speaker

[@fernandohood5542]

Followed the instructions but using pic18f assembly . Mail is sent but the phone says content not supported. Any ideas?

[@user-wz3pi6ls4t]

Good afternoon It is not clear where the SMS text is stored and how to write it to a variable.

[@prakashprabhu9203]

Hi i used SIM900A for this project but when i type the (CMD) C for calling its not going....what to do ?

[@iftikarfadhlirohman3524]

please make tutorial with gprs connection

[@enriqueatala2567]

Hello, thank you for your videos, very useful. I ask you, you propose the 800L connected to the 5v of the arduino but my question is, when you send or receive an SMS or calls, the consumption of the 800l can be up to 2A I understand and this cannot damage the arduino or both boards? Also, what is the difference between the SIM800 L and the SIM900? Greetings

[@vungtauhoamai5037]

It can not micro, speaker

[@otello647]

it can not damage?

[@kieferjohndumpit2449]

how can the recieved message displayed on the serial monitor be converted to a string?

[@cristianmarquez1848]

ATD+(my number); ERROR. Any idea?

[@glomyporal3929]

Hello,😊 I would like to ask where I can buy those hardwares online?

[@instrumentool]

Can you share how to connect the SIM800L V2 to Blynk using GPRS? Thanks

[@miliohm]

There is a library for that actually. It's easier, you can google it

[@osmerromero4606]

Could you tell me how to buy a phone number recorded in the SIM phonebook with the AT + CPBF command, or one that will give you a result, please

[@jonatanpap9402]

Hi Sir! Do you suggest any SIM800L V2 library?

[@zinasdimitris4769]

Dou you have some code for making call , receiving and send sms with raspberry

[@EmanMarcaida]

How about the issue with peak current usage? since it can be connected to the arduino, how will it handle currents up to 2A?

[@miliohm]

It can't handle up to 2A. but sometimes it just work under 2A.

[@pookoye]

Is there any AT command for sending SMS to the SIM address book?

[@deobertamar9554]

My Sim800l V2 can't register network,what is the problem?

[@stamstam1570]

Same here i tried externel power lm2596 but same problem

[@dariodraiman6339]

Hi, great video! Does the module turns on automatically when you apply power? In the datasheet is states that the module has a power key pin that must be held low for at least 1 second for power on/off. Thanks!

[@jeetenzhurlollz8387]

yes, but the power supply is critical.it uses 5v with peak of 2 amps at very high frequency transients. Put a more than 470uF capacitor with power supply. LM2596 with capacitors work well. If power supply is inadequate, it will keep resetting itself and never managing to register to network.

[@stamstam1570]

Thanks for details, your solution solved my problem

[@CMarxChako]

@jeetenz hurlollz I have the same problem with my SIM800L EVB v2.2, I'll be sure to give this a try. Thanks..

[@antebilic4227]

@@jeetenzhurlollz8387 can you explain to me how to connect capacitor with 5V output of arduino?

[@miliohm]

+ capacitor on VCC of SIM800L and - capacitor on SIM800L GND

[@karthiktalakokkula2537]

Can I use SIM 800L as the module in a way that can send SMS of the GPS location once the button (SOS) is pressed? Do note that I have used Neo 6M module for GPS tracking... So is it possible to automatically send an SMS alert to predefined mobile number??

[@miliohm]

Sure, I think many KZbinr already made that

[@karthiktalakokkula2537]

@@miliohm Thanks for the reply!! Can you please provide the link to any tutorial ?

[@miliohm]

@@karthiktalakokkula2537 kzbin.info/www/bejne/ZoGXg2xnndiAnJI

[@karthiktalakokkula2537]

@@miliohm Thank you !!!

[@senpaixv4339]

sorry may i ask. im following ur step and when im uploading it spamming '?????????????????'

[@tetskuroko4377]

Hi can i ask if it supports 3g to 5g sim card?

[@kui3usiek_540]

Okey but what when the module cant register to network but everything is okey ?

[@krewetka000]

Did you find the problem?

[@kui3usiek_540]

@@krewetka000 yes problem was with my sim card because its got a simlock

[@kui3usiek_540]

@@krewetka000 but i still cant recive message

[@kui3usiek_540]

@@krewetka000 did you grom Poland?

[@colove6628]

@@kui3usiek_540 wassup bro I'm interested in figuring something out . I really need someone that knows this stuff better than I do. Can we chat . I really would appreciate it . I respect all this stuff

[@kayeilano6597]

Hello po ask ko lang po if pano kung Yung nakalagay po dun sa serial monitor "text sent" pero di po nareceive Yung message sa phone, sana masagot po, thank you po

[@helloizejjs2252]

yea i was wondering too

[@Lamoboos223]

does SIM800L wirk with 5G sim card?

[@deejae_music]

the sms thing doesn't work, only the call

[@SpicyTakoyaki]

This is great tutorial. But will it still work if I plug my gsm module on different source but still the output is on the arduino?

[@katopavla]

yes it will be fne

[@ianacoustic6685]

HELLO SIR I try again SEND SUCCESSFULLY BUT I did not receive any text message please help me

[@kamoteroy4257]

so this can be connected to arduino without external power supply?

[@aaravbansal2476]

yo, great video, but my Sim800L isn't able to register/connect to a network. Could you give a solution for that?

[@miliohm]

Try watching my video with the tittle sim800l troubleshooting guide

[@aaravbansal2476]

@@miliohm thanks

[@halilsalihu1494]

hello. i am from norway and i am doing a project that uses sim800L. i have a telia sim card which wtill has 2G network and still my sim800l V2 is not finding network. i get no blinking not even without sim card inserted. the network light is just off all the time. can you help me?

[@miliohm]

try watching this video, it has step by step troubleshooting for sim800l. Even it uses the sim800l v1. It almost the same. kzbin.info/www/bejne/p3qbp5efhsmLqqM

[@carsgocrazzy2548]

hi sir hope ur doing great im right having a problem ,the module keep blinking and cant connect to the my sim card even if im using the xl4005 DC-DC connecting to my sim800L v2.0 module , i guess that the problem is in the network registration processus ,can you give the specific and successive AT commands that shoud i use in order so i can connect my sim card to the module ?

[@zakariaali-ry5fg]

Hello i have same problem how can i solve it ?

[@MagnetiC135]

Sms800L doesn't work, is only for 2G, and in my country is not longer available

[@jumbo999614]

Can I use LM2596 buck convert to provide 5v 3a to this module? I'm going to make my project portable so I need to use 18650 battery instead of adapter.

[@miliohm]

Single 18650 should be boosted since the voltage around 3.7V. use boost converter like XL6009. LM2596 used to stepdown the voltage. Did you use some 18650 in series? Or you can use the red SIM800L (v1). It can be powered with voltage around 4V.

[@jumbo999614]

@@miliohm Thank you for reply. I use Sim900A and two 18650 (in series) on LM2596 5v fixed 3a which I made by myself by watching youtube tutorial. I don't know why network never established. I guess my micro-sim card is not properly seated in the module's lid. So I'm looking for new GSM module.

[@miliohm]

​@@jumbo999614 try watching this video to find the cause kzbin.info/www/bejne/p3qbp5efhsmLqqM

[@Syeon1432]

hello! can i use this code to inform when there's a detection detected?

[@anokhautomation4453]

Dear Sir . Shall i connect the Arduino 5 volt directly to sim800l v2 without a diode?? And how many Ampere is minimum required??

[@abdulrahmanal-zubaidi972]

I'm having the same question too. my gsm keep blinking every 1 sec. should it be more than 1 Ampere?

[@baldeeptiwana]

@@abdulrahmanal-zubaidi972 it needs 2 amps. connect a capacitor

[@abdulrahmanal-zubaidi972]

@@baldeeptiwana thanks man!

[@Thilankavindu]

@@abdulrahmanal-zubaidi972 Did it worked?

[@abdulrahmanal-zubaidi972]

@@Thilankavindu unfortunately it still doesn't work. then i changed from using gsm to nodemcu

[@edwinmelgarejo9459]

What a great video and thank you very much for sharing your knowledge. I have implemented your program and it does not compile for me by Serial.println(_buffer); and the error it shows me is: unterminated argument list invoking macro "F" can you help me to solve it thanks Edwin

[@miliohm]

did you copy the sktech from my website?

[@cypriannyambabvu8122]

Hello how are you? When l open serial monitor it displays question marks (?????????) What could be the problem?

[@miliohm]

please check the baudrate.

[@swstkdhar12]

I don't know whose code it is actually, because I can see the same code being copied and pasted in various channels.

[@christianbrune8638]

Hello My sim800 doesn't found the network. When I put the voltage D2 is on.after D6 is flashing 1 second every second and D2 is on 7 seconds and off 2 seconds.RIO and R7 always off Can you help me . Thanks C.BRU

[@miliohm]

Try watch my video about sim800l troubleshooting guide. Even for different sim800l it still relevant

[@junhaocheow1306]

can i know this version 2 can connect with arduino nano?

[@johnpatrickabsalon2221]

the code says no dialtone how can i fix it

[@4ib03b_adityaprasetyo8]

what library are you using

[@Victorggm]

BEST TUTORIAL EVER !!! ! ! ! ! 1 Million THANKS

[@miliohm]

Thanks!

[@stamstam1570]

Can help, led 1second blynk

[@khaimai2271]

Hi, I am using the esp32. I follow your instruction. However, the last function _String _readSerial(). when I comply the code, it said In Function 'String _readSerial()': warning: control reaches end of non-void function [-Wreturn-type] Can you help me to explain the function of String _readSerial(). Thank you so much.

[@weebbanana7895]

I am using esp8266, the network does not register, maybe you also need to connect a capacitor to increase current. That error is due to the network not registered, thus sim is not detected

[@rfhamster]

You resolved it? I have the same problem

[@fatedzero1039]

How to send multiple sms to multiple numbers?

[@erwintrianandaerwin6265]

Hello sir, I use the LDR sensor using the sms gateway output, why after the sms mode is active, the sensor becomes an error and detects continuously???? Please help

[@miliohm]

I need more information, like the code and everything

[@erwintrianandaerwin6265]

@@miliohm I plan to make the sensor when sent the message "ON" then the system / sensor is active and when sending the message "OFF" the sensor is off. But instead the error when the sim module is active the sensor detects continuously...

[@alfredoiireyes7413]

hi can i get a gcash payment for that method sir? thanks

[@marviclazo5837]

good day! my sim800l v2 can send texts but not links or urls. can i ask how this happens?

[@charlesaustin9129]

Hi what sim did you use did u use a 4g sim?

[@deobertamar9554]

error ,No Carrier What is the. Problem?

[@tusharbhardwaj7511]

Hi, I actually wanted to ask that I'm using sim800l with Arduino uno to send SMS and make call simultaneously one after another but the problem is that after connecting to network call function is working really fine but SMS are not sent somehow,.... I've tried tons of code but SMS are not being sent please help if anyone can ! I would be really thankful

[@miliohm]

Try watch my video with the title SIM800L Troubleshooting guide

[@trixiemagdua4583]

How to send sms in two number?

[@idocohen1819]

Can you send/receive USSD code ?

[@utbahrabuan4779]

Hi, what is the purpose of pin VDD and RST?

[@jeetenzhurlollz8387]

vdd, according to some outputs 2.8 v when network is registered.RST resets the module boot up sequence and resets it.

[@arefkebriaee]

hi i use your code, call and receive function work correctly but send function not, when i type 's' to send sms after several minutes response ERROR. do you know what is wrong?

[@krewetka000]

Did you find the problem?

[@stamstam1570]

Sorry i can't connect to network 1second led any help plz

[@user-vj4ce5td3u]

god belas you

[@bryankoech3699]

when I wait for connection it turns off and then on continuously.....what can be the problem?

[@Thilankavindu]

Were you able to solve this? Seems like I have the same problem.

[@stamstam1570]

Same here

[@sinnesia2958]

I use this as an alternative when I get annoyed by version 1actually

[@miliohm]

You should be more patience 😂

[@rodym1681]

Hello man The led keeps blinking every 1 second what can I do how to solve my problem?

[@miliohm]

Try use power supply with 2A current

[@stamstam1570]

I use lm2596 with two capacitors it works yesterday But now don't work

[@user-nk3tl7tm5w]

hi i am from a different country, would the module work with our simcard here?

[@miliohm]

What country?

[@user-nk3tl7tm5w]

Philippines, also do you still need an external powersupply when using sim800l v2?@@miliohm

[@user-nk3tl7tm5w]

@@miliohm pls help kind sir, I am trying to make a laser based security system for my school project, i need to know if i would still need an external battery to use a sim800L version 2 in arduino

[@moussaab8292]

Can the GSM be fed from the Arduino or should it be an external power source?

[@miliohm]

It has 5V pinout. So it should works with 5V input. Unless the current is not sufficient.

[@mutheuatsiaya6451]

@@miliohm But arduino does not output a current of 2A which is required by the GSM module. How then can it work? I have tried powering the GSM with arduino and did not get any blink from the GSM LED

[@haticeand7202]

@@mutheuatsiaya6451 Hi! Did you solve the problem?

[@miliohm]

You should try external power supply. Like 5V adapter

[@aliakbarcheema1089]

I even try external power supplies of 5V with 2A but its still not connecting

[@nadjetmessafa7905]

Thank you

[@turquoise5310]

how to fix if it says can't open device. ASAP AHHA

[@BrunoTechno]

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

[@miliohm]

Check my another video about sim800l troubleshooting guide. It works the same way with V1

[@stamstam1570]

Same here and led every 1second

[@alexandruistrate3097]

Hi, this module work with a 4G sim ? (Orange for example)

[@miliohm]

Works for 4G SIM in my country. But it's only available for GPRS/EDGE

[@alexandruistrate3097]

@@miliohm and what s the solution .. i m from România, idk what îs GPRS / edge

[@miliohm]

@@alexandruistrate3097 GPRS/EDGE is slow internet connection. If you need fast Internet you can use 4G SIM module. But if you just need phone/SMS this should works.

[@raeldelagua4948]

@miliohm are u using 4g simcard? or what

[@miliohm]

Yes, but the module only has GPRS ability

[@masacuata458]

Thanks! Please can you explain how to record a call ? Sorry for my bad english.😅

[@TheOGRushfire]

will it work if i do not put antenna on it?

[@miliohm]

Works for me

[@TheOGRushfire]

@@miliohm hi I am stuck on a project and don't know what's wrong with it can you help me?

[@afkarifqi]

is it working if we didnt open the serial monitor? bcs in my case its didnt working if i didnt open the serial monitor. *but the video was so good tho, i'll press like

[@miliohm]

Enggak bisa mas, emang programnya merintah lewat serial. Kalau tanpa serial bisa dirubah dikit programnya. Tergantung mau kapan ngirim SMS atau nelpon. Dan apa triggernya

[@afkarifqi]

@@miliohm nah itu mas gimana ya caranya biar bisa bekerja tanpa buka serial monitor? kalo ngerubah diprogram, kira kira dibagian mana ya mas?

[@miliohm]

@@afkarifqi ya tergantung, mau ngirim SMS-nya pas apa. Kan harus ada triggernya. Masa ngirim terus di loop?

[@afkarifqi]

@@miliohm pernah coba sih mas triggernya pake sms yang tak kirim lewat hape, tapi tetep gabisa. harus buka serial monitor

[@juniardiwicaksana8555]

bagaimana saat membuka serial monitor tetapi "board at COM1 is not available" ?

[@ogaalsame]

make sure to select the correct port.

[@akmalamin5076]

sir, can i used 4g sim for sim800L?

[@miliohm]

In my country. I can use 4G card. But sure, the module, only works for GPRS/EDGE

[@maricarcabrera8583]

nays nays thank u

[@fernandohood5542]

Actualy I prefer 3.3volts.

[@miliohm]

Sure

[@stamstam1570]

Led clignote everey 1second can help?

[@miliohm]

Try use separate power supply with minimum 2A current

[@stamstam1570]

@@miliohm thank you very mch

[@stamstam1570]

Sorry i use lm2596 for externel power in 5.1 volt but the same thing please help

[@miliohm]

@@stamstam1570 watch my another video about SIM800L troubleshooting guide

[@ianacoustic6685]

Is this compatible with a 5G sim card, sir?

[@miliohm]

As long as the sim is compatible with 2G. Then it's should working

[@ianacoustic6685]

sir I have a problem when I type s the result is send successfully but I don't receive any text message what's the problem?

[@miliohm]

@@ianacoustic6685 try watching my video about SIM800L troubleshooting guide. it works the same way

[@yadzverde3257]

No i2c device found pls help

[@miliohm]

It's not even use i2c

[@ramage7646]

Can I interface this with an LCD?

[@miliohm]

Sure

[@ramage7646]

@@miliohm I'm kinda new. How can I interface the message using code? Do I just put lcd.print() then what? I'm sorry sir I know only python and not much of C/C++

[@miliohm]

@@ramage7646 what exactly do you want to make?

[@sajankanda6518]

my GSM is connected to the network and led is blinking every 3 seconds but, when I upload the exact code to the arduino- it doesn't send SMS to the mobile phone, I am in Canada using the phone number in code as [phone]xx, there is no reply from gsm when "s" is send to arduino. CAN YOU HELP ME WITH THIS, I NEED THIS ASAP FOR MY SCHOOL PROJECT ??????????

[@miliohm]

Whatch my another video about troubleshooting. These SIM800L works the same way m.kzbin.info/www/bejne/p3qbp5efhsmLqqM

[@AdrianHernandez-kd1hv]

LOVE U MEN

[@user-fn8du1db5v]

Pak, ini kartunya pake kartu sim card biasa spt telkom apakah bisa?

[@miliohm]

Suka gagal, yang pasti bisa pake kartu IoT

[@user-fn8du1db5v]

@@miliohm tegangan input yg bagus untuk ke sim800l berapa pak? Terimakasih🙏

[@serg_tolstiy87]

Спасибо!

[@gozaliasw]

Makasih bang

[@colove6628]

If anyone has time to chat with me alil bit to help me out. I really need to understand how something works I've tried to talk to the right people . I'm open for suggestions if I can explain a few key points. I think this is very unique and interesting

[@nopeenion]

gan, ini saya pake sim800l persis kayak punya agan, tapi kok cuma blinking terus gitu ya lednya, kalo boleh tau kenapa gan? mohon pencerahannya gan

[@miliohm]

Kalau bilnking masih cepet biasa karena belum dapet sinyal. Belum dapet sinyal bisa disebabkan karena power kurang

[@nopeenion]

@@miliohm iya, blinking cepet dan gak berhenti berhenti gan. Untuk solusinya gimana ya? saya lagi butuh cepat soalnya untuk Tugas Akhir perkuliahan saya 😂 makasih banyak juga gan udah fast response

[@davidalfayadh8460]

Solusi nya apa ya bang kalo power kurang begitu?

[@nopeenion]

@@davidalfayadh8460 punya saya sudah bisa sih gan, pakai baterai 12 v terus sambungin ke modul stepdown, jadiin tegangannya di kisaran 5 v, setelah itu biarin deh nyari sinyal, paling engga nunggu sekitar 2 menitan baru dapat sinyalnya

[@davidalfayadh8460]

@@nopeenion oh gitu ya makasih bang

[@aripnugroho655]

Bg kenapa ya kok waktu bulan november saya coba program ini bisa tpi pas hari ini saya coba cuma keluar 'Type s to send an SMS, r to receive an SMS, and c to make a call" tolong bg jawabanya apakah itu modul saya yang rusak tpi saya coba saya telpon ke nomor yang ada gsm masuk lo bg......

[@miliohm]

Dapet sinyal ga? Kedipan lambat?

[@aripnugroho655]

@@miliohm dapat sinya bg tpi

[@aripnugroho655]

Keluar tulisan gak jelas

[@aripnugroho655]

@@miliohm boleh minta nomer wa atau email atau apa supaya saya kirim gambarnya bg.....

[@miliohm]

@@aripnugroho655 [e-mail]

[@aliwahyudi8691]

Kak mau tanya...? Katanya modul sim800l tidak bisa digunakan setelah aturan pemblokiran imei berlaku......apa bener kak?

[@miliohm]

Banyak yang bilang begitu, tapi saya bekum coba lagi dalam beberapa bulan terakhir.

[@kusumoanggoro8026]

Sy juga g bisa, lednya sllu bliking 1 detik (indikasi g ada sinyal) pas cek imeinya g kdaftar, bingung jadinya mesti gimana, ada sarankah?

[@kwcatur]

@@kusumoanggoro8026 saya punya bbrp GSM module, semuanya bisa dipakai. Kayaknya, blokir IMEI ngga berlaku utk GSM module. Mudah2an

[@miliohm]

Pertama dipakai setelah ada aturan atau sudah pernah dipakai sebelum ada aturan?

[@kwcatur]

@@miliohm beli SIM800L V2 dari China jauh stlh peraturan blokir IMEI. Bisa dipakai. Sampai skrg masih dipakai juga