Sim800l | GSM Home Security Alarm with Arduino | Ultrasonic Sensor Security System

what if i replace the battery with ac dc adaptor or usb cble

Can the coding works with esp32?

Good afternoon. May I ask if I use an adaptor with 4V and 2A. It will still work right? Thank you!

How can I get the code boss

Do you have code?

hii sir ,
I have connected same and same code but it's not calling to phone when near to ultrasonic sonic sensor ..
and in serial monitoring it's show calling..

Can i use the 3.3V of Arduino to power the gsm module?

bạn chọn dây cắm đực cái, hay đực đực hay cái cái vậy bn

i need this project bro

Hi may I ask is it okay to use sim900a instead of sim800l?

Sir gsm is blinking in one second

sir...Serial port monitor only show this "????" TX & RX ports are connected correctly. But this only shows "????"

Same code for Arduino nano??

sir, do you have its circuit diagram?

Sir is project ko DTMF ke sath combine kr sakte hai kya

Sir water pump control banayye 3phse ditec and over load honese bandh ho jaye or hame mesege aajaye

Good

Which antenna is used in SIM800L

Good days sir, can I still use the code in the description using the GSM SIM800L V2? thank you

Sir can that call any type of sim cards such as globe smart etc?