Does anybody worked on Quectel EC200 series SIM module for establishing an MQTT connection to the cl
Does anybody worked on Quectel EC200 series SIM module for establishing an MQTT connection to the cloud/broker? @techielew
NAT+QMTCONN=0,"deployment-fc9b6ee2","chara","chara"
OK
+QMTCONN: 0,1
+QMTSTAT: 0,3
I'm getting the error like the above, but Ideally the response should be +QMTCONN:0,0,0
OK
+QMTCONN: 0,1
+QMTSTAT: 0,3
I'm getting the error like the above, but Ideally the response should be +QMTCONN:0,0,0
MI have not tried this before , but it will be helpful to check out the Quectel EC200 series AT commands documentation for detailed explanations of the +QMTCONN and +QMTSTAT responses, particularly error codes like "3" so you can find specific troubleshooting steps for this particular error code
NI've checked man, based upon the input, I made changes, even though, it is giving the same error.
If someone have any example code, it will be really helpful for me
If someone have any example code, it will be really helpful for me
NHelp Us Improve Our Community: Share Your Feedback! 
Dear Community Members,
We’re always looking to enhance your experience and provide more value to our community. Please take a few minutes to complete our survey and let us know your preferences and suggestions. Your feedback will help us shape future events, content, and activities.
[Survey Link: https://docs.google.com/forms/d/e/1FAIpQLSdfqr-xQHa8IKm_tbhk7Z_z_Bq1NC-vqGycYTUuvTES0gPAQA/viewform]
Thank you for your time and input!
Dear Community Members,
We’re always looking to enhance your experience and provide more value to our community. Please take a few minutes to complete our survey and let us know your preferences and suggestions. Your feedback will help us shape future events, content, and activities.
[Survey Link: https://docs.google.com/forms/d/e/1FAIpQLSdfqr-xQHa8IKm_tbhk7Z_z_Bq1NC-vqGycYTUuvTES0gPAQA/viewform]
Thank you for your time and input!
BHope this helps
AI'm using 3 cm one but still the same problem
BSim 900 has an antenna like thing
BTry using the serial monitor to see if you are actually getting value from the module, also check your pin configuration
BTest the sim module,
#include <SoftwareSerial.h>
//Create software serial object to communicate with SIM900
SoftwareSerial mySerial(7, 8); //SIM900 Tx & Rx is connected to Arduino #7 & #8
void setup()
{
//Begin serial communication with Arduino and Arduino IDE (Serial Monitor)
Serial.begin(9600);
//Begin serial communication with Arduino and SIM900
mySerial.begin(9600);
Serial.println("Initializing...");
delay(1000);
mySerial.println("AT"); //Handshaking with SIM900
updateSerial();
mySerial.println("AT+CSQ"); //Signal quality test, value range is 0-31 , 31 is the best
updateSerial();
mySerial.println("AT+CCID"); //Read SIM information to confirm whether the SIM is plugged
updateSerial();
mySerial.println("AT+CREG?"); //Check whether it has registered in the network
updateSerial();
}
void loop()
{
updateSerial();
}
void updateSerial()
{
delay(500);
while (Serial.available())
{
mySerial.write(Serial.read());//Forward what Serial received to Software Serial Port
}
while(mySerial.available())
{
Serial.write(mySerial.read());//Forward what Software Serial received to Serial Port
}
}
Once you have uploaded the sketch, open the serial monitor at baud rate 9600. You should see the output below on the serial monitor.
#include <SoftwareSerial.h>
//Create software serial object to communicate with SIM900
SoftwareSerial mySerial(7, 8); //SIM900 Tx & Rx is connected to Arduino #7 & #8
void setup()
{
//Begin serial communication with Arduino and Arduino IDE (Serial Monitor)
Serial.begin(9600);
//Begin serial communication with Arduino and SIM900
mySerial.begin(9600);
Serial.println("Initializing...");
delay(1000);
mySerial.println("AT"); //Handshaking with SIM900
updateSerial();
mySerial.println("AT+CSQ"); //Signal quality test, value range is 0-31 , 31 is the best
updateSerial();
mySerial.println("AT+CCID"); //Read SIM information to confirm whether the SIM is plugged
updateSerial();
mySerial.println("AT+CREG?"); //Check whether it has registered in the network
updateSerial();
}
void loop()
{
updateSerial();
}
void updateSerial()
{
delay(500);
while (Serial.available())
{
mySerial.write(Serial.read());//Forward what Serial received to Software Serial Port
}
while(mySerial.available())
{
Serial.write(mySerial.read());//Forward what Software Serial received to Serial Port
}
}
Once you have uploaded the sketch, open the serial monitor at baud rate 9600. You should see the output below on the serial monitor.
B
BI saw something please check it out
B
Whi aymen ,
The SIM900A seems to be limited to Asia, and only compatible with 2G.
Have you check this limitations ?
The SIM900A seems to be limited to Asia, and only compatible with 2G.
Have you check this limitations ?
MHiii
MThis is Mahesh Kamble completed the B.Tech in Electrical Engineering 2023 passout student
JDo you have a project you are working on.
Thello please someone can help/guide me for making quadcapter (components, code ,hardward circuit.....)
ZStart simple, it will take time. Break down what you need, what you need to learn and how you will learn it. The rest is really easily found on google.
AI already tryed multiple codes like this and non of them workd + pin configuration is correct just tx and rx
AOohh I didn't know that, I'm situated in African, lemme check that maybe that's why
BCheck the sim module if it's actually working
AIt's brand new 
AOrdered it from aliexpress 
Aneed help related to using - use MAX485 TTL to RS485 Converter Module with esp32 to get convert value of rs485 output to serial and print it on serial port
Ai have a instrument with pinouts - rx,tx,com
Acode -
A#include <HardwareSerial.h>
#define DE_PIN 2 // GPIO pin connected to DE (Data Enable) and RE (Receiver Enable) pins of MAX485
#define RS485_SERIAL Serial2 // Define the Serial port used for RS485 communication
void setup() {
Serial.begin(9600); // Initialize serial monitor
RS485_SERIAL.begin(9600); // Initialize RS485 serial communication
pinMode(DE_PIN, OUTPUT); // Set DE pin as output
}
void loop() {
digitalWrite(DE_PIN, HIGH); // Enable transmission mode
if (RS485_SERIAL.available()) { // If data is available on RS485 port
while (RS485_SERIAL.available()) { // Read all available data
char c = RS485_SERIAL.read(); // Read character
Serial.print(c); // Print character to serial monitor
}
}
digitalWrite(DE_PIN, LOW); // Disable transmission mode
delay(100); // Delay before checking for new data
}
#define DE_PIN 2 // GPIO pin connected to DE (Data Enable) and RE (Receiver Enable) pins of MAX485
#define RS485_SERIAL Serial2 // Define the Serial port used for RS485 communication
void setup() {
Serial.begin(9600); // Initialize serial monitor
RS485_SERIAL.begin(9600); // Initialize RS485 serial communication
pinMode(DE_PIN, OUTPUT); // Set DE pin as output
}
void loop() {
digitalWrite(DE_PIN, HIGH); // Enable transmission mode
if (RS485_SERIAL.available()) { // If data is available on RS485 port
while (RS485_SERIAL.available()) { // Read all available data
char c = RS485_SERIAL.read(); // Read character
Serial.print(c); // Print character to serial monitor
}
}
digitalWrite(DE_PIN, LOW); // Disable transmission mode
delay(100); // Delay before checking for new data
}
Abut i am not getting the output but the instrument is displaying its valus
Ai searched online some article told me about matching slave id and poles
Abut i don't know what to do
Acan anyone hel me out
UHi @accur4te If you don't mind could you tell us the exact instrument that you're trying to interface with ESP32 over RS485? Because you may need a salve ID/commands to communicate with the master microcontroller.
Aits a flow meter
UI guess you'll find the details about addressing scheme or the format of the data packets, including how to address specific devices (slaves) on the bus. So that you can write code for esp32 to read flow meter data.
AOkay I will give it a try
Acan you tell how can i get started with it , i am confused about how should i do it.
BOhk
RYour code doesn't show any handling for the RE try apply the logic in your code if it doesn't work then check the wiring if it's done properly
AOkay got it
THey @Event Pings,
Good news/bad news. Good news is we have another Engineering Hour coming up this Friday on getting started with Direct Memory Access (DMA) from @Edison @Edison_ngunjiri: https://discord.gg/7sJVtCyhSc?event=1250671812329607218. He'll be taking us from basic concept to real-world applications and of course a demo of memory to memory data transfers, here on Sunday, June 16th at 15:00 GMT. This is the first in a series towards timing, interrupts, and then OS-based design.
Now for the bad news, and sorry for the short notice—I've got a last-minute conflict so I won't be able to host Office Hours tomorrow morning, which breaks an almost 8-month streak! But don't get too down, as next Friday, June 21st, we'll be back in Office Hours at the usual time of 15:00 GMT to continue our exploration of Zephyr with @ZacckOsiemo. Again, you can access that through the server event listings.
Of course, as always, keep the collab going in the server!
Good news/bad news. Good news is we have another Engineering Hour coming up this Friday on getting started with Direct Memory Access (DMA) from @Edison @Edison_ngunjiri: https://discord.gg/7sJVtCyhSc?event=1250671812329607218. He'll be taking us from basic concept to real-world applications and of course a demo of memory to memory data transfers, here on Sunday, June 16th at 15:00 GMT. This is the first in a series towards timing, interrupts, and then OS-based design.
Now for the bad news, and sorry for the short notice—I've got a last-minute conflict so I won't be able to host Office Hours tomorrow morning, which breaks an almost 8-month streak! But don't get too down, as next Friday, June 21st, we'll be back in Office Hours at the usual time of 15:00 GMT to continue our exploration of Zephyr with @ZacckOsiemo. Again, you can access that through the server event listings.
Of course, as always, keep the collab going in the server!
KHi,
I'm trying to log in on the meeting right now
I'm trying to log in on the meeting right now
KBut can't find the link
K
KI don't understand. Is there no meeting today?
K
KIt's now Friday 15:00 GMT,
so I thought there's a meeting...
so I thought there's a meeting...
N@kmulier
KOh, okay, I see it now. I was confused because the message was sent today, and Brandon says he can't host the meeting "tomorrow" - so that would point at Saturday.
I guess it's due to time zones.
I guess it's due to time zones.
