My favourite prototyping development board is Arduino Uno and Nodemcu #ArduinoUyir
Because with these 2 board we can do most projects. Single Analog pin is the only problem with Nodemcu. That can be resolved by any other basic Arduino family development board. Both these two boards I fall in love
with hardware. Nodemcu's WiFi+Uno's digital/analog pins. Also using these two a begginer can learn almost everything in hardware.
Kerala Police Cyberdome is conducting Online Hackathon “CODE-VID-19” to find IT based innovative solutions that can help Police in the fight against COVID-19. Inviting tech-community across India to come forward and contribute to this mission. Showcase your Technical skills to Stop-Prevent-Contain the Pandemic. CODE-VID 19 envisages to find technology based innovative solutions for the Police to effectively contain corona virus for the benefit of society. The last date of submission of your idea and technical solutions is 29-03-2020. The best idea will be suitably rewarded.
Registration Link: https://forms.gle/PiJho8MsGkibVUgTA
What the situation while your micro-controller confused in an infinity loop
. Is there any case like hang or stuck your micro-controller while performing a task. What are the normal troubleshooting method? Reset Button, Right? Is it practically possible to do press on a button all time ?
. So, What about a device to do this task ? sounds good. Cool...!
Read the full blog : https://makergram.com/blog/watch-dog-timer/
The Challenge
Do you think you can come up with some interesting ideas revolving around Amazon Alexa? What if we could help you build that idea into a reality. Tell us about your idea and the best one wins an Amazon Alexa Echo Dot.
🧲 Bonus points for those solutions involving Covid-19 or promoting social-distancing.
Schedule
️
For Registration: https://alexa.hackclub.com/
@mhmdrameez I used that library before 6 Month ago and Worked fine. But now, it's not working. I think there are some issues with the library. Because there are somany open issues in GitHub Repo.
But while trying with Firebase ESP8299 Client library, which is listed on Arduino library manager it's worked fine for me. So, make a try using this library.
Library: Tools >> Manage Library > search for firebase esp8266
My output :
Firebase:
@salmanfaris forgot to call function getAcData() and getGyData() before goo.AcX... 
Is there any commercial product which powered by ATMEGA328P with Arduino bootloader? Also, Is there any problem to use micro-controller in commercial products which using Arduino sketch?
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If you’ve been involved in the civic response for COVID-19, we want to hear from you! Tell us about your projects, share what’s going on in your community, tell us how your makerspace, FabLab, maker club or school is involved. Your stories and insight can help others. Get involved by organizing or leading a panel discussion, host a workshop or demonstration, share a presentation, or contribute a project.
May be "FIREBASE_HOST" have some error, try in this model "<YourProjectName>.firebaseio.com"
Look this project : ( https://github.com/jagannathBhat/barish/tree/master/nodeWithFirebase)
Thank-you @salmanfaris
It's solved.
Actually, It was my mistake. I didn't add a proper reset for MCU.
@salmanfaris When connecting with PC. It will work well.
@salmanfaris At that time not receiving an actual message. Receiving a blank message.
@salmanfaris Yes. I'm providing common ground. Resistors also working.
@salmanfaris
Sorry, leave that part
Actually I was using ("AT+CMGS=\"" +number+ "\""); this part and passing number into the funciton. This different functions all are done part of debugging.
just checking Is there any problem in string handling.
@salmanfaris
This is my messy code.
#include <SoftwareSerial.h>
//#include <avr/wdt.h>
//Create software serial object to communicate with SIM800L
SoftwareSerial mySerial(9, 2); //SIM800L Tx & Rx is connected to Arduino #3 & #2
String content = "";
int Pulses = 3; //connect water flow sensor
volatile int pulsecount; //Variable to count number of pulses
unsigned long curr, prev, interval = 5000;
int led = 11;
long count = 0;
unsigned long onCall_prev_time, onCall_interval = 15000;
unsigned long timer;
bool ledFlag = 0;
bool smsFlag = 0; // sms flag
bool ackFlag = 0; //acknowledge flag
bool ackFlag_1 = 0; //acknowledge flag
bool recSmsFlag = 0; //Receive SmS flag
int statusAck = 0;
bool onCall_flag = 0; //to check call status
int c = 0;
bool terminate_flag = 0; //Flag to terminate whole event
bool terminate_flag_1 = 0; //Flag to terminate whole event
String number_1 = "YYxxxxxxxxxx";
String number_2 = "YYxxxxxxxxxx";
String number_3 = "YYxxxxxxxxxx";
String number_4 = "YYxxxxxxxxxx";
String test = "YYxxxxxxxxxx";
String userName;
void setup() {
pinMode(led, OUTPUT);
pinMode(Pulses, INPUT_PULLUP);
attachInterrupt(digitalPinToInterrupt(Pulses), CountPulses, FALLING);
//Begin serial communication with Arduino and Arduino IDE (Serial Monitor)
Serial.begin(9600);
//Begin serial communication with Arduino and SIM800L
mySerial.begin(9600);
Serial.println("Initializing...");
delay(500);
Serial.println("Watchdog Enabled ");
mySerial.println("AT+IPR=9600");
updateSerial();
//wdt_enable(WDTO_8S);
}
void updateSerial()
{
//wdt_reset();
detachInterrupt(CountPulses);
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
}
}
void recSerial()
{
String msg;
detachInterrupt(CountPulses);
delay(500);
while (Serial.available())
{
mySerial.write(Serial.read());//Forward what Serial received to Software Serial Port
}
while (mySerial.available())
{
detachInterrupt(CountPulses);
msg = mySerial.readString();//Forward what Software Serial received to Serial Port
processMsg(msg);
}
}
void loop() {
//wdt_reset();
Serial.println("Loop strated----++++---++");
pulsecount = 0; //Start counting from 0 again
interrupts(); //Enables interrupt on arduino pin 3
delay(1000);
detachInterrupt(CountPulses);
//Calculating the water flow rate in Milli Liters per minute
long flowRate;
flowRate = (pulsecount * 2.22 * 60);
Serial.print("Flow rate=");
Serial.print(flowRate); //Print milli liters per minute on serial monitor
Serial.println("mL/minute");
recSerial();
digitalWrite(led, ledFlag); //Set or reset led based on the flow
if (ackFlag_1) {
Serial.println("Acknowledge Received-----------------------");
content = "ACK received from " + userName +" paused all notifications ";
smsSend_5(content);
ackFlag_1 = false;
}
if (terminate_flag_1) {
content = "GOT 'TERMINATE' From "+userName;
smsSend_5(content);
terminate_flag_1 = false;
}
if (onCall_flag) {
Serial.println(c++);
if (c >= 15) {
Serial.println("Calling Event Completed");
mySerial.println("ATH");
updateSerial();
onCall_flag = false;
c = 0;
}
}
if (statusAck) {
if (pulsecount != 0) {
smsSend_5("No problem. it's working perfectly!");
statusAck = 0;
}
else if (pulsecount == 0) {
smsSend_5("It's Not working!!!!");
statusAck = 0;
}
}
if (!recSmsFlag) {
Serial.println("Setting into Receive Mode");
recMode();
recSmsFlag = true;
}
if (flowRate > 1) {
Serial.println("Reseted all countors for new event ---++");
count = 0; //Reset countor
prev = 0; //reset timer;
ackFlag = false; //reset ACK flags
smsFlag = false; //Sent sms flag
terminate_flag = false; //Reset Terminate flag
ledFlag = 1; //Set LED Flag
}
if (flowRate == 0.00) {
curr = millis();
Serial.println("flowrate is Zero!!");
ledFlag = 0; //Reset flag
//wdt_reset();
Serial.println("Reseted Watchdog");
if (curr - prev >= 1000) {
prev = curr;
Serial.print(count++);
Serial.println(" Seconds");
if (count == 30 && ackFlag == 0) {
Serial.println("ALERT 1 - FLow not working for 30 Seconds");
//ackFlag = 0;
smsSend_5("Flow is Zero about 30 Seconds!!!");
smsFlag = true; //set sms flag
//Send To other number too!
//wdt_reset();
Serial.println("Reseted Watchdog");
//Send SMS
}
if (count == 40 && ackFlag == 0) {
Serial.println("ALERT 1 - FLow not working for 40 Seconds");
//ackFlag = 0;
//smsSend_5("Flow is Zero about 40 Seconds!!!");
smsFlag = true; //set sms flag
//Send To other number too!
//wdt_reset();
makeCall(test);
onCall_flag = 1;
Serial.println("Reseted Watchdog");
//Send SMS
}
if (count == 50 && ackFlag == 0) {
Serial.println("ALERT 1 - FLow not working for 50 Seconds");
//ackFlag = 0;
smsSend_5("Flow is Zero about 30 Seconds!!!");
smsFlag = true; //set sms flag
//Send To other number too!
//wdt_reset();
Serial.println("Reseted Watchdog");
//Send SMS
}
if (count == 60 && ackFlag == 0) {
Serial.println("ALERT 1 - FLow not working for 60 Seconds");
//ackFlag = 0;
smsSend_5("Flow is Zero about 30 Seconds!!!");
smsFlag = true; //set sms flag
//Send To other number too!
//wdt_reset();
Serial.println("Reseted Watchdog");
//Send SMS
}
if (count == 90 && ackFlag == 0) {
Serial.println("Not working for 1.5 minutes");
makeCall(test);
//smsSend();
//SmS
//wdt_reset();
Serial.println("Reseted Watchdog");
}
if (count == 150 && ackFlag == 0) {
Serial.println("Not working for 2.5 minutes");
// makeCall(test); //make call to Number 2
smsSend_5("Flow is Zero about 2.5 Minutes!!!");
//smsSend(number_2,"Flow is Zero about 2.5 Minutes!!!");
//smsSend(number_3,"Flow is Zero about 2.5 Minutes!!!");
//smsSend(number_4,"Flow is Zero about 2.5 Minutes!!!");
//SmS
//wdt_reset();
Serial.println("Reseted Watchdog");
}
if (count == 210 && ackFlag == 0) {
Serial.println("Not working for 3.5 minutes");
smsSend_5("Flow is Zero about 3.5 Minutes!!!");
// makeCall(number_1); //make call to Number 3
//smsSend();
//wdt_reset();
Serial.println("Reseted Watchdog");
//SmS
}
if (count == 270 && ackFlag == 0) {
Serial.println("Not working for 4.5 minutes");
smsSend_5("Flow is Zero about 4.5 Minutes!!!");
// makeCall(number_2); //make call to Number 4
//smsSend();
//SmS
}
if (count == 180 && terminate_flag == 0) {
Serial.println("just a reminder");
smsSend_5("Blower is not working more than 8 minutes");
// smsSend_5("It's been 8+ Minutes Your blower is not working.");
//smsSend(number_3,"It's been 8+ Minutes Your blower is not working. Hope Now, You are working on that ;)");
//smsSend(number_4,"It's been 8+ Minutes Your blower is not working. Hope Now, You are working on that ;)");
}
if (count >= 600 && terminate_flag == 0) {
Serial.println("DANGER!!!");
smsSend_5("DANGER!! Flow is Not working more than 10 Minutes!!!");
count = 0;
///SmS
}
}
}
}
void CountPulses()
{
pulsecount++; //Increment the variable on every pulse
}
void recMode(){
Serial.println("Setting Recieve mode");
mySerial.println("AT");
updateSerial();
mySerial.println("AT+CMGF=1");
updateSerial();
mySerial.println("AT+CNMI=1,2,0,0,0");
updateSerial();
}
void smsSend_1(String content) {
detachInterrupt(CountPulses);
Serial.println("SMS sending");
mySerial.println("AT");
updateSerial();
mySerial.println("AT+CMGF=1"); // Configuring TEXT mode
updateSerial();
mySerial.println("AT+CMGS=\"+ YYxxxxxxxxxx\"");//("AT+CMGS=\"" +number+ "\""); //change ZZ with country code and xxxxxxxxxxx with phone number to sms
updateSerial();
mySerial.print(content); //text content
updateSerial();
mySerial.write(26);
Serial.println("sent!!");
recSmsFlag = false; //Reset Rec SMS flag
}
void smsSend_2(String content) {
//wdt_reset();
detachInterrupt(CountPulses);
Serial.println("SMS sending");
mySerial.println("AT");
updateSerial();
mySerial.println("AT+CMGF=1"); // Configuring TEXT mode
updateSerial();
mySerial.println("AT+CMGS=\"+ YYxxxxxxxxxx\"");//("AT+CMGS=\"" +number+ "\""); //change ZZ with country code and xxxxxxxxxxx with phone number to sms
updateSerial();
mySerial.print(content); //text content
updateSerial();
mySerial.write(26);
Serial.println("sent!!");
recSmsFlag = false; //Reset Rec SMS flag
}
void smsSend_3(String content) {
detachInterrupt(CountPulses);
Serial.println("SMS sending");
mySerial.println("AT");
updateSerial();
mySerial.println("AT+CMGF=1"); // Configuring TEXT mode
updateSerial();
mySerial.println("AT+CMGS=\"+ YYxxxxxxxxxx\"");//("AT+CMGS=\"" +number+ "\""); //change ZZ with country code and xxxxxxxxxxx with phone number to sms
updateSerial();
mySerial.print(content); //text content
updateSerial();
mySerial.write(26);
Serial.println("sent!!");
recSmsFlag = false; //Reset Rec SMS flag
}
void smsSend_4(String content) {
detachInterrupt(CountPulses);
Serial.println("SMS sending");
mySerial.println("AT");
updateSerial();
mySerial.println("AT+CMGF=1"); // Configuring TEXT mode
updateSerial();
mySerial.println("AT+CMGS=\"+ YYxxxxxxxxxx\"");//("AT+CMGS=\"" +number+ "\""); //change ZZ with country code and xxxxxxxxxxx with phone number to sms
updateSerial();
mySerial.print(content); //text content
updateSerial();
mySerial.write(26);
Serial.println("sent!!");
recSmsFlag = false; //Reset Rec SMS flag
}
void smsSend_5(String content) {
detachInterrupt(CountPulses);
Serial.println("SMS sending");
mySerial.println("AT");
updateSerial();
mySerial.println("AT+CMGF=1"); // Configuring TEXT mode
updateSerial();
mySerial.println("AT+CMGS=\"+ YYxxxxxxxxxx\"");//("AT+CMGS=\"" +number+ "\""); //change ZZ with country code and xxxxxxxxxxx with phone number to sms
updateSerial();
mySerial.print(content); //text content
updateSerial();
mySerial.write(26);
Serial.println("sent!!");
recSmsFlag = false; //Reset Rec SMS flag
}
void makeCall(String number1) {
detachInterrupt(CountPulses);
recSmsFlag = 0; //Reset Rec SMS flag
mySerial.print (F("ATD"));
mySerial.print (number1);
mySerial.print (F(";\r\n"));
updateSerial();
onCall_prev_time = millis();
Serial.print("----Calling to ");
Serial.println(number1);
onCall_flag = true;
//delay(15000);
}
String getName(String nameOfuser) {
String user;
detachInterrupt(CountPulses);
Serial.print("Get Name is Running ----------");
if(nameOfuser.indexOf(number_1)>0){
user = "Rashad"; //name of first user
return user;
}
else if(nameOfuser.indexOf(number_2)>0){
user = "Hashim"; //name of second user
return user;
}
else if(nameOfuser.indexOf(number_3)>0){
user = "Rasil"; //name of third user
return user;
}
else if(nameOfuser.indexOf(number_4)>0){
user = "Anas"; //name of fourth user
return user;
}
else if(nameOfuser.indexOf(test)>0){
user="Rafi";
return user;
}
else{
user = "Unknown";
return user;
}
}
void processMsg(String msg){
Serial.print(msg);
detachInterrupt(CountPulses);
Serial.println("process started!!!!!----------");
digitalWrite(11,1);
delay(500);
digitalWrite(11,0);
if ((msg.indexOf("Stop")>0)) {
Serial.print("Got ACK from------ ");
//wdt_reset();
Serial.println("Reseted Watchdog");
userName = getName(msg);
ackFlag_1 = 1;
ackFlag = 1;
}
else if ((msg.indexOf("Check")>0)) {
// detachInterrupt(CountPulses);
Serial.println("Status Test MSG Received --------");
userName = getName(msg);
statusAck = 1;
}
else if ((msg.indexOf("Terminate") > 0)) {
// detachInterrupt(CountPulses);
userName = getName(msg);
Serial.print("Terminated all notification until next event by ");
//Serial.println(userName);
// wdt_reset();
Serial.println("Reseted Watchdog");
terminate_flag_1 = 1;
terminate_flag = 1;
}
else{
Serial.println("Not a admin commend ");
}
}
@salmanfaris
I'm using LM2596 buck converter.
Following this setup
I'm trying to send some and receive SMS using SIM800L. After checking using Arduino Serial monitor all worked well. But after connecting on a PerfBoard using ATMEGA328 and clock circuit. It not sending/ receiving SMS. But the same while connecting with PC and open serial monitor It's working properly. Why this is occurring?
Some messages are sent But it was some blank messages.
I'm powering SIM800L through DC-DC buck Convertors .So, no way to issues with power. Not adding my messy code Right Now. If you wanna look at code too for a solution. Let me know.
Thanks in advance.
@salmanfaris Actually I'm not sure what was that Core 0 register dump:
But I parsed the JSON. Refer Here for cJSON example. But while working this one, faced another problem. HTTP response includes the whole headers, status code, and body. JSON parser only work if the whole response in the form of JSON. So, Initially stored all responses into a char buffer and cleaned all headers. By using if(response[i] == '{' ) and some flags.