Questions tagged [sim800]
The sim800 tag has no usage guidance.
12
questions
1
vote
0
answers
24
views
How to set SIM800L to save messages to memory and reading them
I have so many commands that i need help to setup my SIM800L module. Tutorials i have seen so far involves the messages going directly to the mCu this is problematic for me because if the mCU is ...
- 211
0
votes
1
answer
34
views
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
*/
...
- 211
1
vote
0
answers
182
views
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 ...
- 11
1
vote
0
answers
66
views
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 ...
- 11
0
votes
0
answers
103
views
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 ...
- 39
0
votes
1
answer
37
views
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) - ...
- 909
1
vote
0
answers
299
views
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 ...
- 23
0
votes
1
answer
122
views
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 ...
- 21
1
vote
0
answers
620
views
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 ...
- 11
1
vote
0
answers
226
views
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 ...
- 111
1
vote
1
answer
152
views
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+...
1
vote
0
answers
179
views
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&...
- 11