Whilst the DC/DC converter to power the SIM800L is a nice touch, for simplicity connect the 5V pin of the Arduino via a resistor to the base of an NPN power transistor, the collector to the external 2A power supply and the emiiter to the SIM800L power input. Since high current is only intermittent the transistor should not have time to overheat so long as it's happy to take 2A.
@mybotic_tech3 жыл бұрын
great explanation!
@kamugishaalex28773 жыл бұрын
I wish all innovators be smart like you to , to give codes and circuit diagrams
@mybotic_tech3 жыл бұрын
lol, i am not smart, i am learning and sharing
@erik.landen3 жыл бұрын
Thanks for this tutorial! I used it to make my heater in the car turn on/off and up/down in heat with som modifications. Great help, thanks again!
@mybotic_tech3 жыл бұрын
great to hear your project work! thanks
@zamaxshariiytopnasheeds25463 жыл бұрын
For what purpose need this just sending messages?
@abolfazl33932 жыл бұрын
Hi,thanks for the video. I want to make this project. But I want to make it in a way that it can check the relay condition and then send a sms to the number. And then you can send an sms to turn it off and on. Or something like a code that you can send to the module and then the Arduino checks the condition of relay. And then base on the condition commands the module to send an sms and tells you that the relay is on or off. Can you help me?
@jaozinasd4 жыл бұрын
You guys got to use wider wires to conect the SIM800L, he uses too much current and a regular jumper cant supply it unless the signal is excellent.
@phinamalaka32194 жыл бұрын
Hi sir My GSM Module sim800l is always blinking every 1sec and am using 3A power supply, should that be the problem?
@mybotic_tech4 жыл бұрын
no signal detected, try go to outside and test it
@jelleseelig86814 жыл бұрын
I have a problem ...my module is blinking every second ...I’ve connected it with a Buck converter (4,1V) to my Arduino uno. It’s answering on AT with OK and on AT+CCID with the mobile number on AT+CSQ with 14-17 but it won’t connect to the net ...can somebody help me?
@mybotic_tech4 жыл бұрын
try check the credit of your sim card. And try to put under sky to get signal easily.
@snehankitchikhalekar19734 жыл бұрын
Hello sir my gsm 800l module always blinking in 1 sec , i was also waited for 1 hours but still it blinking repeatedly in 1 sec period PLZZ help sir is there any solution 🙌
@mybotic_tech4 жыл бұрын
it means detect no signal, maybe power problem (at least need 2A power supply), also go to outdoor test it
@@mybotic_tech I use ESP32 instead of arduino with Arduino IDE.As I said led blinks in 1 sec.When I send AT+CREG? or AT+CMGF? ,I get ERROR response(this sim card of my phone) ,when I use another sim card (line is not active. so I could not send message to my phone.with this sim card I can get OK response from many AT command)I do no get ERROR response.What might reason be?
@musicdispensary80354 жыл бұрын
@@shrigatty1278 Sir i need phn call then press 1 motor is on and feedback sms .
@robosale7 ай бұрын
I have a wire of 800 l gsm. The module is not working. The circuit connection is in place. the module is working. only sms and phone are not coming. the sim card is not working and gives an error. IT commands are also not working. Please help me.
@himanshubhaskar6631 Жыл бұрын
Why didn't you use voltage level shifter/resistance Voltage divider from 5V to 3.3V while sending to RX of Sim800L module, doesnt it will damage the Module?
@mybotic_tech Жыл бұрын
signal no problem, power supply need to take care
@srinivassunkari75564 жыл бұрын
Hi Sir in the place of ardrino uno we can use nano please reply to
@mybotic_tech4 жыл бұрын
same connection with arduino uno
@srinivassunkari75564 жыл бұрын
@@mybotic_tech sir i ask for nano is it same connction
@srinivassunkari75564 жыл бұрын
sir in the place of conecting to laptop can we connect to battery after codeing
@mybotic_tech4 жыл бұрын
@@srinivassunkari7556 hi, yes, the connection same
@srinivassunkari75564 жыл бұрын
@@mybotic_tech thank you sir
@Ala-bo4xq2 жыл бұрын
Hello, I wanted to ask If we use the sim800i module, can we use Bluetooth headset?
@mybotic_tech2 жыл бұрын
not sure for it, sorry
@jairamvutukuri85204 жыл бұрын
In how many numbers we can add in gsm module means to make a call at one click on gsm module
@mybotic_tech4 жыл бұрын
you can add as many as you need inside your code, but you may only call a number in a time
@pookoye2 жыл бұрын
does this accept the RELAY_ON command from any mobile phone or the sender number to be added in the sketch? this helps in case the sender's mobile has signal issues
@mybotic_tech2 жыл бұрын
Both also can, can set inside the code
@jcsilva.262 жыл бұрын
@@mybotic_tech can you please say here to put the mobile phone. Is possible to after say 2 seconds the relay turn of?
@mybotic_tech2 жыл бұрын
@@jcsilva.26 yes, can, need to adjust the code inside digital write(relay, Low); Delay(2000); Digital write(relay, high) Above example only, syntax may be wrong,
@jcsilva.262 жыл бұрын
@@mybotic_tech how thanks. Here I can add the number that commands the relay (i only want 1 number to be possible to make the relay work)
@mybotic_tech2 жыл бұрын
@@jcsilva.26 yes, can also, everything is coding
@iktcom35544 жыл бұрын
Waou tre cool
@mybotic_tech4 жыл бұрын
thanks
@upullakmal61234 жыл бұрын
continued send the push button command, that's why
@mybotic_tech3 жыл бұрын
you means push the button without release?
@proximacentauri39164 жыл бұрын
why did you use 2 power supply? one from your laptop by USB cable, the second one from AC current by DC jack. does using power supply from laptop isn't enough?
@mybotic_tech4 жыл бұрын
the usb power supply not enough for gsm, need to use adapter minimum 2A for gsm
@mybotic_tech4 жыл бұрын
one supply from adapter enough for arduino and gsm, the usb i attach is for serial monitor
@proximacentauri39164 жыл бұрын
thanks i have followed your tutorial and it works like a charm! the supply voltage i have been using is 4.2v
@mybotic_tech4 жыл бұрын
great! thanks for your feedback
@sanjaybansal8265 Жыл бұрын
most of the SIM800L GSM Modules available in the market do not work.
@mybotic_tech Жыл бұрын
May be you can try sim900A
@pookoye2 жыл бұрын
Is there any AT command for sending SMS to the SIM address book?
@mybotic_tech2 жыл бұрын
You may refer here simcom.ee › SIM900PDF SIM900 AT Commands Manual_V1.11 - simcom.ee
@samuelquartey40194 жыл бұрын
what are the specifications for the sim card for this project ?
@mybotic_tech4 жыл бұрын
not so sure, we just using normal sim card to run it. i think should be no problem all most sim card
@RideWithAnthony3 жыл бұрын
Can i use to control my scooter on and off?
@mybotic_tech3 жыл бұрын
can, no problem, need to add scooter driver to control
@RideWithAnthony3 жыл бұрын
@@mybotic_tech can you show me ?
@mybotic_tech3 жыл бұрын
sorry, i dont have driver foe scooter...
@RideWithAnthony3 жыл бұрын
@@mybotic_tech I can get it let me know maybe we can chat
@inspiredvalue4 жыл бұрын
Green LED is not activating of relay module then how you are saying relay is activated? Relay is not changing the STATE. Reply!
@mybotic_tech4 жыл бұрын
green led is behind the wire, but it really activate
@inspiredvalue4 жыл бұрын
@@mybotic_tech But mine is not activating for the same wiring. What to do? I uploaded the code you provided, without any changes. Please.
@foudaarist15584 жыл бұрын
@@mybotic_tech hi sir. What could be the probleme when the system is not activating the relay ? i used the same code and wiring. I waiting for a response please
@arahanthjain85764 жыл бұрын
@@foudaarist1558 same my relay is also not working after same coding. plz respond
@osmerromero46063 жыл бұрын
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
@mybotic_tech3 жыл бұрын
i think better save the number in sd card, and read out the number from sd card, more convenient, sim card need to insert back to phone to change phone book and phone book can have a lot of number
@Datablocker3 жыл бұрын
I used eeprom to save phone numbers
@osmerromero46063 жыл бұрын
@@Datablocker hello, How can I use the eeprom, to save the numbers and then the system looks for them there, please could you guide me with that I am attaching my email osmer.romero.rojas@gmail.com
@jagar15813 жыл бұрын
Hello bro can u reply me pls compile time error softwareserial.h use of deleted function.
@mybotic_tech3 жыл бұрын
compile time error normally is related to port, it may due to not proper disconnect the usb. you may restart PC and try again
@malikjualan17504 жыл бұрын
why relay not respone when i pull out usb cable ?
@mybotic_tech4 жыл бұрын
It may due to power supply problem. You may check the board's power supply which from the DC jack. Make sure the power from DC jack is in range 7v to 12v. Hope this help. Thanks
@mehulyadav89544 жыл бұрын
sim.println("AT+CMGS=\"+91xxxxxxxxxx\" "); i dont want to write this. i want to write mobile number on serial monitor in arduino and on that number, i want to send message. how can i do?
@mybotic_tech4 жыл бұрын
you need to use serial.read(), you may study this
@tokitahmid66414 жыл бұрын
thanks
@mybotic_tech4 жыл бұрын
thanks
@jahangirali61504 жыл бұрын
my Question is whose number write in the code (String number = "+xxxxxxxxxxxxx";) that are insert SIM in module SIM 800L or other On which we receive message or call
@mybotic_tech4 жыл бұрын
the number you can set by yourself
@jahangirali61504 жыл бұрын
@@mybotic_tech thanks
@lokeshimmandi4 жыл бұрын
Can we use 4g Sim in gsm 800l?
@mybotic_tech4 жыл бұрын
hi, that we never try before, but should be ok, if too slim, put some paper on it. 😅
@slbots4 жыл бұрын
great job bro here is my video @W78o
@mybotic_tech4 жыл бұрын
thanks
@muhammadabdulmalik33794 жыл бұрын
Hello, why program not running when i plug off usb cable?
@mybotic_tech4 жыл бұрын
when using DC jack, the power supply need in range 7v to 12v 2A. what power supply you use?
@muhammadabdulmalik33794 жыл бұрын
I using power suply 12v. Will this program run when it does not open the serial monitor? because I will put it in the car
@mybotic_tech4 жыл бұрын
your arduino turn on?
@muhammadabdulmalik33794 жыл бұрын
@@mybotic_tech yes. Using power dc 12v
@alexandrpavlov44743 жыл бұрын
@Utkarsh Alset try to make your computer go to sleep after first sms are OK, then pull usb out. While power supply is stable, all works in my case (also SIM800, but code is different)
@Rajesh.01434 жыл бұрын
Good Morning bhaya...... I have a project, Am work a one small company. I need GSM Module board with 12Relays. We have to Control this with mobile. 1st Relay-----Generator start Relay 10sec need to close. 2nd Relay------Generator Off Relay 10sec need to close 3rd Relay-----Generator suplay on need close our timings. And remaining Relays 4th Relay----- If 230v Mains Fail we have to get Message/Mains Fail Alaram, if Mains Power Available / Mains Power Restored. 5th Relay------If 230v Generator ON we have to get DG ON Message, If DG Stop / DG Stop message. 6th Relay------If 230v Load suplay Available we have to get Power Issue clear message, If Load suplay not available we have to get Power Issue.
@Rajesh.01434 жыл бұрын
Is this possible
@mybotic_tech4 жыл бұрын
possible, can do
@Rajesh.01434 жыл бұрын
@@mybotic_tech please shear your mail ID
@Rajesh.01434 жыл бұрын
@@mybotic_tech please make a video
@bhavdipkatariya52194 жыл бұрын
sourcode isn't open. how can i get this code.?
@mybotic_tech4 жыл бұрын
www.instructables.com/id/How-to-Use-SIM800L-to-Send-SMS-and-Control-Relay-b/ you may download the code from the link
@iremarjosephamplayo78304 жыл бұрын
can somoen answer me. my serail monitar print "???????" all the time?? how can i fix it?
@mybotic_tech4 жыл бұрын
may be your serial baud rate set wrongly?
@iremarjosephamplayo78304 жыл бұрын
@@mybotic_tech i missed the ground to arduino hehehehe
@aniszed36414 жыл бұрын
How to send an SMS to Phone Number in Current Memory ?
@mybotic_tech4 жыл бұрын
phone number can be set inside the code
@aniszed36414 жыл бұрын
@@mybotic_tech thank you for your reply ,Is there a way to send an SMS alert to the numbers stored on my SIM's Phonebook instead of reading them from the code?
@mybotic_tech4 жыл бұрын
i never explore this before, but i think can do. need to explore the AT command which can access the sim card memory.