Questions tagged [gprs]
General Radio Packet Service, is a protocol to transfer data on 2g and 3g cellular networks.
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Connect Fona3G SIM5320 to cloud over MQTT protocol using GPRS/TCP with stm32
I am seeking assistance in connecting the FONA 3G SIM5320 module to the cloud via TCP connect to establish an MQTT connection. I have successfully connected the module using GPRS connectivity by ...
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SIMCOM SIM7000G power supply design testing LTspice
According to the datasheet SIM7000 _Hardware Design_V1.05 in section 3.1 Power Supply,
On VBAT pads, when module works on EDGE or GPRS mode, the ripple current is up to 2A typically. For steady ...
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SIM7600 module. Transparent mode issue
I use a SIM7600G communication module.
I'm trying to send data in transparent mode via TCP/IP. But after I establish a connection with the TCP/IP server, I get an "error" in response to the <...
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Interface PCM module SIM800 , SIM808
I am planning to use a SIM800 or SIM808 GSM/GPRS module's PCM interface. I configured the circuit according to the datasheet. I send the 256 kHz clock from the micro to the PCM_CLK pin of the module ...
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Metal detector vs ground penetrating radar (GPR) frequencies
I was reading about metal detectors and at first got thinking they use lower frequencies because of ground/rock losses. Low frequencies will penetrate better, but seeing GPRs penetrating much deeper ...
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An effective way to knock down GSM on demand
I am building a test rig for a device that has a GSM module to communicate and I want to test how the FW behaves when there is a comms loss and recovery. The GSM module of the device has an antenna ...
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SIM 800L, I lose signal (+CSQ=0,0) once I insert the SIM card
I have a GSM/GPRS module, SIM800L, and I am facing network difficulties with it.
If the SIM card is not inserted, the antenna connects perfectly to the network with ...
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SIM800l keeps disconnecting after I send at+sapbr =1,1
I have confirmed my SIM card has data and can connect to the internet on my smartphone. The SIM800l also is fed with enough power and the LED does blink every three seconds.
I set up my SIM800l module ...
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SIM7000E modem stops sending SEND OK reply
I am using a SIMCOM SIM7000E modem to send data using MQTT. Usually modem reply correctly to
AT+CIPSEND command and sent ">" to enter the required data and then reply with "SEND OK&...
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Problems with the GSM/GPRS module SIM800L
I have a problem with an SIM800L module. I tried to connect the SIM800L to the network, but it does not connect. The LED should flash 3 times per second, but it slowly flashes 9 times, then turns off, ...
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SIM800 doesn't give GSM location
I have problem to get exact GSM location using SIM800L. I have followed instructions in the manual. But my module just gived me latitude = 0 and longitude = 0. This is what I do with my serial ...
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Can I directly connect microphone to speaker of two SIM800Ls
There are two SimCom SIM800L quad-band GSM/GPRS modules. I would like to make some kind of call relay, such that SIM #1 accepts incoming call, then SIM #2 executes outgoing call, and once both ...
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Can a server send data to my SIM800c while it is in sleep mode?
I have a SIM800c and I'm also using an adafruit.io server. I'm building an alarm system and I'm wondering if I will be able to send commands to the system using the server while the GSM module is in ...
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Need help finding pin layout diagram for GSM module (SIM800c RPi development board)
I'm having a bit of a conundrum. I bought a SIM800c development board off of ebay but the pins are not labeled at all and I have no idea which pins Rx and Tx are. I really want to hook it up to my COM ...
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Estimating GPRS power consumption
I'm designing a telemetry station for air quality measurement. Right now, I'm trying to estimate the power consumptions of different hardware configurations, but I'm struggling with the GSM/GPRS ...
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GSM noise from a 2-layer PCB with SIM800C
I've designed a 2-layer PCB that contains a 12-5V buck converter (P2576L-50 - a Clone of the LM2576), 3.3 (AP1117-33) and 4V (MIC29302WU) shunt regulators, an STM32 micro and a SIM800C GSM module.
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how to find GSM service level of a IP-connection?
I am using a GSM modem to send data to a remote server over TCP/IP connection. I am using STM32F103 for the software. I want to connect 3 LED's with the 'F103 to indicate which connectivity and ...
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which is faster GPRS vs 4G on arduino?
I am using Sim800 GPRS to send data to MySQL server online.
I use Arduino mega 2560
for one update in MySQL, it takes 1-2 seconds to run required AT commands
If I use a 4G module like SIM7000E will ...
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Is there any active GSM antenna exist? [closed]
Active antenna amplifies received signals with active components, so it has better parameters. Active antenna for the only receiving systems like GPS and TV signals are exist on the shelves. But the ...
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Can I use the same antenna for GSM and RF433 MHz?
I've already designed a PCB with GSM/GPRS chip and also with RF 433MHz receiver only (without transmitter).
I would like to know if I can use the same antenna for both GSM/GPRS module and RF 433MHz ...
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If I need to send GPRS commands is it better to use a "proper" modem, arduino or a mobile? [closed]
I need to send some commands from a computer via GPRS protocol to some devices.
The options I have found so far are:
Commercial GPRS modem
Arduino GPRS shield
an old phone as GPRS modem
Is there ...
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SIM800L cannot init
I'm working with SIM800L for remote-sensing communication via GPRS. The problem is, everytime the module is running initialization function (SIM800.begin(), different for every SIM800L library), it ...
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UART noise on A6 GSM module
I'm using the A6 GSM module to send data from my sensors board to a server via GPRS.
The problem is that most of times, usually when the module attaches to the network or connects to the server, ...
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Connecting a Lithium battery directly to the GSM module
I have a GSM module (M66 from Quectel) and a single cell Lithium battery,Based on Datasheet module operated in the 3.3 ~ 4.6 V and as I know battery deliver 3.7 ~ 4.2 V based on it's sate of charge....
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AT+HTTPACTION=1 not transmiting my datas I downloaded with AT+HTTPDATA
I'm using a SIM808 with arduino, and I want to send via a post request some data to a server using a php page that receive data via post requests, I'm using this AT commands but whenever I check my ...
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Can the M590E's boot pin be used to reduce power consumption?
What does the boot pin actually do? Can it be used to reduce the module's power consumption when the module is not required? All recommendations are to pull it low to boot. Can it go hi again to turn ...
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Protection from fully charged battery
I want to connect a Li-Ion battery on a GSM/GPRS module expecially this one (http://www.electrodragon.com/w/GSM_GPRS_A6_Module). In general parameters is mentioned operating voltage from 3.3V to 4.2V
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GSM/GPRS antenna noise depending on cable length and position
A board I designed has a noise problem that is caused by an onboard GSM/GPRS module (the Quectel M66 [1]). This module is connected to a Siretta Delta 2C [2] dipole antenna via 20cm coax cable. The ...
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Help needed for understanding placement of flexible PCB GSM antenna
I am using flexible GSM Antenna for my application.I am sticking the antenna on top of my FR4 based PCB board as shown in the below figure. Note that the PCB, on top side (One towards antenna) has GSM ...
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GSM Module gets into reboot loop
I have assembled a diy m590e gsm gprs module kit, bought from Amazon. The seller provided image is:
The Schematic used to assemble the kit is:
I connected it to the Laptop using a CP2102 based USB ...
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Issue of data posting in GSM over the GPRS from when use Different service provider
I'm using Telit's HE910 GSM Modem To Post The data on web-server.
so i'm using different company service provider SIM Card to test the data posting from different service provider.
In this case when i'...
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GSM Data Post Over the GPRS Using GSM Modem [closed]
I'm using GSM Modem To post the data over the GPRS for specific website.
when i'm posting the data using VODAFONE IN (APN: www) Sim card it pos the data in i'm recieved
HTTP 200 ok Response
But ...
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How to send HTTP parameters using POST method and SIM908 GPRS
I want to send HTTP parameters using POST method through SIM908 GPRS. Here is and example of what I want to send:
...
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Interfacing ATK-SIM 900A GSM/GPRS Module with Arduino Mega [duplicate]
Problem:
I have this ATK-SIM900A GSM / GPRS module which will be used to send sms. But I can't figure out how to interface it with an Arduino as there are no documentation available online.
Module ...
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Which pins does the Efcom 1.2 GPRS shield require to be connected in order to work?
I have this GPRS shield for arduino and I'd like to use it later on with some other standalone microcontroller. I have not been able to get it working though without connecting it to arduino and I ...
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SIM900 Conducted Emissions Fail
I'm currently having trouble getting a product through EMC.
Radiated emissions were comfortably under the limit, but conducted are failing badly.
Here are the results:
The noise appears to be ...
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Posting to php server using SIM900 GPRS with AT commands
I am using a SIMCOM SIM900 GSM/GPRS module in an embedded hardware application. Rather than sending device data to a server by SMS (what I've been doing so far) I want to switch and start using GPRS ...
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Help SIM5320 Breakout Board construction for Raspberry Pi model B
I need a breakout board based on SIM5320 for experimenting web server http requests. I've found the board shown above in adafruit library and thought of using it as reference and slim it down to the ...
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GSM/GPRS reach for Class 4 2W 900MHz/ Class 1 1W 1800Mhz
I'm studying differents GSM/GPRS modules and all of them have two operation modes depending the frecuency (900MHz and 1800Mhz). If I'm not wrong, for the same power higher frecuencies have a lower ...
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Protect soundsystem from GSM/GPRS pulsing noise sounds [closed]
What is the best way to isolate soundsystem from an modem/cellphone to not hear pulsing noise sounds when GSM/GPRS communication is active.
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PIC24FJ128GA202 UART2 and UART3 not working?
I am working in pic24fj128ga202 microcontroller with L80 and M95 module. here L80 module connected with uart2 and M95 module connected with uart3. now uart1 working normally but uart2 and uart3 not ...
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How do I fetch data from the internet with a GSM module using GPRS? [closed]
Recently I have built a device using Quectel (GSM/GPRS module) interfaced with Atmel MCU. It will control another device using SMS received by that GSM module. Now I am trying to connect it to the ...
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AT+CSQ without Disconnecting PPP Connection in ARCH Linux
I have a Telit GL865 GSM/GPRS module which is connected to a SBC (running ARCH Linux.) via Serial Port. For GPRS connection, PPP connection as indicaten on this page.
I want to read Cell Tower Signal ...
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AT Commands to transmit data through TCP/IP stack with LTE network
I need to design an embedded sotfware that will drive a LTE cellular device (like u-Blox TOBY L2 Series) and its TCP/IP stack to transmit some data toward a distant server.
I'm waiting for the device ...
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GPRS HTTP 400 Bad request
I am facing some problem with GPRS Project. I am sending request to server through GPRS and receiving responce from the server.
I have used AVR ATmega32 micro controller and SIM900 GSM/GPRS Module ...
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Getting GPS coordinates with GPRS/GSM module
I'm trying to understand if I can get GPS coordinates using only a GPRS/GSM module. Probably I can do it by triangulation using BTS on the terrain and based on the RF signal but is that possible? ...
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Help to understand/ explore small sized 3G and GPS Antenna Design
I recently came across an exciting device called Automile, from Sweden and what caught my eye is this -
I am really impressed by the packaging and overall quality of hardware integration they have ...
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Interfacing a GPRS chip (WISMO218) with an RF antenna. Calculating line width for the right impedance
I want to interface the WISMO218 GPRS chip with an antenna. The antenna lines on the PCB board have to be very specific, otherwise the system won't work. I have uploaded the part of the datasheet that ...
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Modem to Modem via GPRS
I am working on a GPRS communication design. What I want to do to connects two modems together via GPRS. But I found that i could not connect.
I was able to connect both modems to the internet using ...
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