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Questions tagged [sim800]

11 questions
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ESP Sim800l Firebase

So, I'm trying to send data from ESP boards- 32 and 8266 using sim800l module to firebase. But I'm getting HTTP not connected error. I tried to search web but it seems that firebase changed something recently and the ways previously used cant be…
Kuldeep Aher
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wemos d1 mini keeps resetting while using SIM800L

I am trying to do a small project with SIM800L with Wemos d1 mini. It is a DTMF based project. The problem here is, every time I make a call the d1 mini is getting reset. This is my first project with d1 mini. For the past few days I have googled,…
S.k.joy
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ESP32 - SIM800 - HTTPS lwIP

I am using ESP32 and SIM800L for my project. The SIM800L does support SSL, TLS 1.0, and TLS 1.1. But web servers nowadays usually support only TLS 1.2 and 1.3. I heard, that the ESP32 HTTPS client can use lwIP stack from other libraries. Is there…
rktech
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Getting location working on SIM800L with TinyGSM?

Hey Arduino enthusiasts :) I have purchased a LilyGo T-Call board. Which has a Esp32 processor and a SIM800L GSM module. For my project i want to send location data over the 2G cellular network. I am using the TinyGSM library for communicating with…
kasper.jha
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How to correctly use SSL certs with the Adafruit SIM800H

I am trying to use a Adafruit Sim800H to connect to Azure using MQTT with an SSL certificate. My first step is trying to put a new SSL certificate onto the board. To do this I am using this example here: https://github.com/vshymanskyy/TinyGSM/ ...…
Andrew
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800l v1 Baud rate is not fixing at 115200, How fix it for 115200 for lifelong

I am trying t change the baud rate of sim800l v1. But not successfully happening, every power cycle again going to AT+IPR= 0. I am using the following AT commands for changing the baud rate. 1.AT 2.AT+IPR? 3.AT+IPR=115200 4.AT&W after power…
SWARNA MOHAN CHANDRA KANTH
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Error Performing HTTP GET request on google sheets (Apps Script) using TTGO T-CALL

I've tried using several libraries such as TinyGSM, SoftwareSerial, AT commands but I'm guessing the problem to be with my GET request url is https://script.google.com/macros/s/GAS_ID/exec?tag=1234&value=5678 and the Apps Script code is function…
Anonymus
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Reply from the SIM800l module is being cut short

I have a sim800l module connected to the Rpi pico hardware UART /* SIM800 RPi Pico 5v *External 2A 5v supply* GND GND VDD 3v3 TXD GP1 RXD GP0 */ void setup() { Serial.begin(115200); while…
DrakeJest
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SIM800L cannot wait for network

I provided LiPo 3.7V 3 cells 3000mAh to SIM800L. The led blynks stably every 3 seconds which means The module has made contact with the cellular network. I ran the code below and it outputs Waiting for network...fail without any AT response #define…
CoffeePlease
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SIM800L stays in 1sec-blink-state

I've bought such on Amazon. My main problem is that it stays in 1sec-blink, meaning it can't registrer cellular network. First I tried with all anntennas possiblities (one of each, both, none) - failed. Using NodeMCU (for 3.3 TxRx) and…
guyd
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sim800l ftp error after http request

I am using esp32 CAM by Arduino IDE and send an image file by ftp using SIM800l GSM/GPRS module to a server and every thing is ok . I can perform http request also and read some data from a website and every thing is ok. Problem is ftp for large…
Ali
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