Temperature Sensor 18B20 with Arduino
Hello everyone, in today's post we are gonna have a look at how to interface temperature sensor Dallas 18B20 with Arduino. There are many temperature sensors available in market like LM35, DHT11 etc but personally I like Dallas18B20 most of all, as it gives the most accurate result up to four decimal points. It operates on single wire and sends all data through this wire. Another advantage of this wire is you can interface multiple sensors with a single data line. You should also have a look at How to use 18B20 in Proteus ISIS.
In today's post, we are gonna get value from this sensor and then print it over the Serial Terminal as well as LCD. We will get the values in degree centigrade. Its not much difficult to interface 18B20 with arduino and also an Arduino library is also availble, using which you can quite easily interface 18B20 with Arduino. Let's get started with interfacing of 18B20 with Arduino.
Note:
Interfacing of Temperature Sensor 18B20 with Arduino
- As I explained earlier, it works on single wire and hence we are gonna need 1-wire library for Arduino along with 18B20 arduino library.
- Download both of these libraries by clicking on the below buttons:
Download One Wire Library Download Dallas Temperature Library
- After downloading the library, place it in the libraries folder of your Arduino Software.
- Now restart your Arduino software and you will find the Arduino folder in the Examples section.
- Next we need to interface our sensor 18B20 with Arduino so design your circuit as shown in below figure:
- So, connect the sensor 18B20 with Arduino as shown in the above figure, connections are quite simple and are as follows:
- Pin # 1 of 18B20 with GND
- Pin # 2 of 18B20 with Pin # 2 of Arduino.
- Pin # 3 of 18B20 with GND of Arduino.
- Add a pull up resistor of 4.7k ohm at pin # 2 of 18B20.
- Here's the images of hardware, we designed for this project, its a 20 x 4 lcd we have used:
- Below image shows the small 18B20 sensor, used in this project, it looks small but very efficient.
- Here's the image showing the complete project:
- Now, copy below code and upload it in your Arduino board and open your serial terminal.
#include <OneWire.h>
#include <DallasTemperature.h>
#include <LiquidCrystal.h>
#define ONE_WIRE_BUS 2
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
LiquidCrystal lcd(12, 11, 7, 6, 5, 4);
void setup(void)
{
Serial.begin(9600);
Serial.println("Welcome to TEP !!!");
Serial.println("www.TheEngineeringProjects.com");
Serial.println();
sensors.begin();
lcd.begin(20, 4);
lcd.setCursor(5,0);
lcd.print("Welcome to:");
lcd.setCursor(1,2);
lcd.print("www.TheEngineering");
lcd.setCursor(4,3);
lcd.print("Projects.com");
delay(5000);
}
void loop(void)
{
sensors.requestTemperatures();
Serial.print("Temperature : ");
Serial.println(sensors.getTempCByIndex(0));
//lcd.clear();
lcd.setCursor(0,0);
lcd.print("Temperature: ");
lcd.print(sensors.getTempCByIndex(0));
lcd.print("C");
delay(1000);
}
- After uploading the code, when I start the project, it started showing the temperature values as shown below:
- As you can see, its giving the temperature of my room which is 23.56 degree centigrade.
- I have also designed a video for more demonstration which is given below:
- It's quite a simple code and is self explanatory but still if you need help ask in comments and I will help you out.
Interfacing of Multiple Ultrasonic Sensor With Arduino
Hello friends, hope you are having fun and enjoying life. Today, I am gonna post about interfacing of multiple Ultrasonic sensor with Arduino. In the previous post, we have seen Interfacing of Ultrasonic Sensor With Arduino and in this post I have interfaced single ultrasonic sensor but in projects especially related to robotics, we have to interface multiple ultrasonic sensors. For example you have an obstacle detection robot, now in order to detect obstacle in front of robot you have to place once sensor on the front side but now you can't detect any object present on left or right side of your robot, so you have to place two sensors one on the left side of robot and one on the right side so in this project you need to use total three ultrasonic sensors, one on the front, one on left and one on right side of robot. Similarly, in another project I have to move the robot in a maze having walls on the side of robots, and my task was to move the robot straight within these walls without hitting the walls. In that case, I also used two ultrasonic sensors on both sides of robot and then applied PID algorithm in order to avoid hitting the walls. So, in short its a common practice to use multiple ultrasonic sensor with Arduino and today we are gonna have a look at how to do it.
I have posted about the basics of Ultrasonic sensor and how it works in my previous post so I am not gonna go into that detail. If you haven't read it then I recommend that you should first read Interfacing of Ultrasonic sensor with Arduino. Now, let's get started with Interfacing of multiple ultrasonic sensor with arduino, which isn't that difficult. :)
Note:
- Other Proteus Libraries are as follows:
- I have also posted more examples on Ultrasonic Sensor Simulation in Proteus, have a look at them and you will get complete understanding of this sensor.
- Moreover, for hardware implementation of Ultrasonic Sensor with Arduino, check below posts:
Interfacing of Multiple Ultrasonic Sensor With Arduino
- Let me first summarize the working of ultrasonic sensor again. With ultrasonic sensor, what we need to do is to generate a trigger signal on its trigger pin for around 10 microsecond.
- As soon as the ultrasonic sensor gets this trigger signal, it sends out an ultrasonic signal.
- This ultrasonic signal then hits something and bounced back.
- Now, in order to check this bouncing signal, we have to read the Echo pin and check for how long it remains HIGH, and on the basis of this duration we calculate our distance with the object.
- This is the process for single ultrasonic sensor and when we are using multiple ultrasonic sensors, what we need to do is simply repeat the whole procedure for all the sensors one by one.
- First of all, we will generate the trigger pulse for first sensor and the read its echo pin and get the distance, then we generate the trigger pulse for second sensor and read its echo pin and so on for the third.
- So, here I am gonna use three ultrasonic sensor and the circuit diagram is shown below:
- I have tried my best while designing this image to make it simple but as there are too much wires so it has become a little complex.
- I am pointing out the pin configuration here so it will be easy for you to interface your sensors with arduino. The pin configuration is as follows:
- Vcc of all sensors will go into +5V of Arduino.
- GND of all sensors will go into GND of Arduino.
- Trig Pin of first sensor into Pin # 3 of Arduino.
- Echho Pin of first sensor into Pin # 2 of Arduino.
- Trig Pin of second sensor into Pin # 4 of Arduino.
- Echo pin of second sensor into Pin # 5 of Arduino.
- Trig Pin of third sensor into Pin # 7 of Arduino.
- Echo pin of third sensor into Pin # 8 of Arduino.
- After connecting the pins as discussed above, now copy the below code and upload it in your arduino board.
- After uploading the code in your arduino, open the Serial Terminal of Arduino software and you will start receiving the distances for all the three sensors.
#define trigPin1 3
#define echoPin1 2
#define trigPin2 4
#define echoPin2 5
#define trigPin3 7
#define echoPin3 8
long duration, distance, RightSensor,BackSensor,FrontSensor,LeftSensor;
void setup()
{
Serial.begin (9600);
pinMode(trigPin1, OUTPUT);
pinMode(echoPin1, INPUT);
pinMode(trigPin2, OUTPUT);
pinMode(echoPin2, INPUT);
pinMode(trigPin3, OUTPUT);
pinMode(echoPin3, INPUT);
}
void loop() {
SonarSensor(trigPin1, echoPin1);
RightSensor = distance;
SonarSensor(trigPin2, echoPin2);
LeftSensor = distance;
SonarSensor(trigPin3, echoPin3);
FrontSensor = distance;
Serial.print(LeftSensor);
Serial.print(" - ");
Serial.print(FrontSensor);
Serial.print(" - ");
Serial.println(RightSensor);
}
void SonarSensor(int trigPin,int echoPin)
{
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = (duration/2) / 29.1;
}
- The code is quite similar to the one we used while interfacing single ultrasonic sensor with arduino, the only thing we changed here is the repetition.
- Before, we were using the same function SonarSensor() but calling it only once for our single sensor interfaced with arduino but now we are calling it three times for all the three sensors.
- Its kind of a generic code, you can interface more sensors with it if you want and what you need to do is only calling this function for the next interfaced sensor.
That's all for today, I think we have posted a lot on the ultrasonic sensor so I am not gonna post any more tutorial on this sensor and now I will start writing on some other sensor. You should also have a look at
Arduino Projects for Beginners. Thanks for reading and share it with your friends and help us grow. :)
Interfacing of Ultrasonic Sensor With Arduino
Today, we are gonna have a look on How to Interface Ultrasonic Sensor with Arduino. Few days ago, I have posted a complete tutorial on How to Use Ultrasonic Sensor Library in Proteus and later I have posted different examples on How to Simulate Ultrasonic Sensor in Proteus. Those posts were about Proteus Simulations and weren't about hardware interfacing, so I thought today let's interface it in hardware.
Simulation is a good starting point for projects but they are really far away from real world. It happened to me a lot of times that my simulations are working perfectly fine but when I design the same circuit in hardware then it says no I am not gonna work. :) So, the bottom line is never trust simulations, unless you properly test it on hardware. So, today I am gonna interface an Ultrasonic sensor with arduino and will check its output on the Arduino Serial Terminal.
1. Introduction to Ultrasonic Sensor
- "Ultrasonic Sensor HC-SR04 is a simple sensor which emits Ultrasonic Radiations from its transmitter and is used for measuring the distance between sensor itself and any obstacle in front of it. The sensor has a transmitter and a receiver on it."
- This sensor consists of four pins, which are:
- Vcc (+5V) : You need to provide +5V at this Ultrasonic Sensor HC-SR04 Pin.
- Trig (Trigger) : It's a trigger Pin where we need to provide a trigger after which this sensor emits ultrasonic waves.
- Echo : When Ultrasonic waves emitted y the transmitter, hit some object then they are bounced back and are received by the receiver and at that moment this echo Pin goes HIGH.
- GND : We need to provide ground to this PIN of HC-SR04 Ultrasonic Sensor.
Note:
- If you haven't bought your components yet for this project, then you can buy them from these reliable sources:
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- Trigger pin is an output pin while the Echo pin is an input pin, we will discuss them in Working section in detail.
- Moreover, it requires +5V to start operating.
- It is normally used to detect objects in front of it or to measure the distance between different objects.
2. Working of Ultrasonic Sensor
- Its working is quite simple, as discussed above, it has a trigger and an echo pin.
- A signal of +5V is sent over to Trigger pin for around 10 microseconds in order to trigger the sensor.
- When ultrasonic sensor gets a trigger signal on its trigger pin then it emits an ultrasonic signal from the transmitter.
- This ultrasonic senor, then goes out and reflected back after hitting some object in front.
- This reflected ultrasonic signal is then captured by the receiver of ultrasonic sensor.
- As the sensor gets this reflected signal, it automatically make the Echo pin high.
- The time for which the Echo pin will remain HIGH, depends on the reflected signal.
- What we need to do is, we need to read this time for which the echo pin is high, which we are gonna do in our next section.
- So, let's have a look at Ultrasonic Sensor Arduino Interfacing.
3. Interfacing of Ultrasonic Sensor With Arduino
- Now we have seen the working of Ultrasonic sensor, so we have some idea what we need to do in order to get the values from it. Let's now have a look at Ultrasonic Sensor Arduino Interfacing.
- First of all, we need to generate a signal of 10 microsecond and then send it over to trigger pin.
- After sending the trigger pin we then need to read the echo pin and wait for it to get HIGH.
- Once it got HIGH then we need to count the time for how long it remained HIGH.
- On the basis of this time, we are gonna calculate the distance of the object from the ultrasonic sensor.
- So, first of all, interface your ultrasonic sensor with arduino as shown in below figure:
- Now, use the below code and upload it your arduino board. After uploading the code, open your serial terminal of Arduino software and you will start receiving the values.
#define trigPin1 8
#define echoPin1 7
long duration, distance, UltraSensor;
void setup()
{
Serial.begin (9600);
pinMode(trigPin1, OUTPUT);
pinMode(echoPin1, INPUT);
}
void loop() {
SonarSensor(trigPin1, echoPin1);
UltraSensor = distance;
Serial.println(UltraSensor);
}
void SonarSensor(int trigPin,int echoPin)
{
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = (duration/2) / 29.1;
delay(100);
}
- Now if you check in the SonarSensor() function, we are generating a pulse of 10 microsecond and sending it to trigPin, which is the trigger pin of our ultrasonic sensor.
- After sending this pulse weare using a funcion pulseIn() , its a builtin arduinofunction and is used to check for how long the echoPin remains HIGH.
- This value is further saved in the duration value and after that we have divided this duration by 2 because the pulse is first sent and then received so in actual it covers double distance, so we need to divide it by 2 in order to get distance between object and the sensor.
- Furthermore, it is again divided by 29.1, which is basically the speed of ultrasonic sound and finally we saved it in a variable named distance which is now in centimeters.
- After uploading the sketch in Arduino, you need to open the Serial Terminal and you will start receiving the values of distance.
That's all for today. I hope you have enjoyed this Interfacing of Ultrasonic Sensor with Arduino. It wasn't that difficult, in our coming post we are gonna
Interface Multiple ultrasonic sensors with Arduino and will get their values on the serial terminal. Till then Take care and have fun !!! :)
Receive SMS with AT Commands using Sim900 and Arduino
Update: I have updated the code and removed the bug. Thanks for informing. Now this code will work perfectly.
Buy This Project
Hello friends, hope you all are fine and having good health. Today, as the name suggests, I am gonna post on how to Receive SMS with AT Commands using Sim900 and Arduino. I have already posted a tutorial on How to Send SMS with Arduino UNO and Sim900, so now we are gonna check the opposite. Sending SMS is quite easy, you just need to write some AT commands and write the message you wanna send and hit the Cntrl + Z and it will be sent. But receiving a text message on your SIM900 shield is a bit difficult because now you need to place a check when user will send a message. So, ideally whenever anyone send a message to your SIM900 module, you should get notified. Today, we are gonna cover this how to receive SMS with AT Commands in detail.
Now, after you get notified, there's a need to read the message as well and also who has sent this message. So, we are also gonna cover it today. So, first of all we will place a check that whenever someone sends a message to our SIM900 module, we get notified and after that we will extract the message and the mobile number of sender. We have designed this code after a lot of effort that's why this code isn't free but we haven't placed a very small amount of $20 so that engineering students can also buy it easily. We can also interface our GSM board with other microcontrollers like PIC Microcontroller as well as 8051 Microcontroller. I have also posted tutorial on How to Receive SMS with SIM900 & PIC Microcontroller and How to Send SMS with PIC Microcontroller so if you are working on PIC Microcontroller then you must give it a look. So, let's get started with How to receive SMS with AT Commands using SIM900 and Arduino.
You must also check GSM Library for Proteus, using this library you can easily simulate your GSM module in Proteus ISIS. Moreover, also have a look at Send SMS with Sim900D in Proteus ISIS in which I have designed a simulation of sms sending in Proteus ISIS.
Receive SMS with AT Commands using Sim900 and Arduino
- There are many GSM modules available in the market so it doesn't matter which one you are using unless its having SIM900 module in it.
- I have explained in my previous post that all GSM modules work on AT commands, so here first of all we are gonna have a look on AT commands we are gonna use for receiving the SMS.
- ATE0 - IT is used to turn off the Echo of GSM shield.
- AT - Just to check that your GSM module is working fine.
- AT + CMGF = 1 - This command will convert the message style to text. In other words we are telling our shield that we are expecting a text message.
- AT+CNMI=1,2,0,0,0 - This command will alert our GSM shield and now whenever it will receive message, it will automatically send an alert on the serial port.
- We are gonna use these four commands in our code and we will be able to receive text message on the GSM shield.
- Remember we have to put Enter after each of the above AT commands in order to execute it.
- Below is the first phase of the code and as you can see in this code we are simply sending these four commands serially from arduino to GSM shield.
- These are two functions I have shown below, the first function is Config() which is simply sending the commands via serially and then the Response() function which is called after every AT command and is receiving the response of that AT command.
- So, here's the partial code for How to Receive SMS with AT Commands using Sim900 and Arduino.
void Config()
{
delay(1000);
Serial.print("ATE0r");
Response();
Serial.print("ATr");
Response();
Serial.print("AT+CMGF=1r");
Response();
Serial.print("AT+CNMI=1,2,0,0,0r");
Response();
}
void Response()
{
int count = 0;
Serial.println();
while(1)
{
if(Serial.available())
{
char data =Serial.read();
if(data == 'K'){Serial.println("OK");break;}
if(data == 'R'){Serial.println("GSM Not Working");break;}
}
count++;
delay(10);
if(count == 1000){Serial.println("GSM not Found");break;}
}
}
- The response of these commands is shown below on the Serial Monitor of Arduino.
- For each AT command, we get a response "OK" from the GSM shield.
- Now, I know that I have sent all these four AT commands and my GSM shield is ready to receive the text messages and will inform me.
- So, when you send a message to your GSM shield, it will give a notification as shown in the below figure:
- Each message received by SIM900 module is start with "+CMT" and after that it has the mobile number of the sender and at the end lies the body of the message, which in our message is "www.TheEngineeringProjects.com"
- So now let's extract this mobile number and the text body from this CMT string.
Getting the SMS Text & Sender Mobile Number
- Till now we have learnt How to Receive SMS with AT Commands using Sim900 and Arduino and send you notification over the serial monitor.
- Now we have to place some checks in our code so that we could be able to get the required data out of this string.
- In order to do so, I am gonna first save this CMT string into an array, which I named as RcvdMsg[index].
- But before saving the data into this string, first I need to make sure that I am actually getting the requried string, that's aso possible that I am receving some garbage values.
- So, I placed a check first, which is checking for these four characters "+CMT", and when I got these character on my serial terminal I got sure that I have the string ready so I made the index = 0 and starting receving the string.
- Next thing I need to do is make sure that I have got the complete string, that was really a tricky part as there's no end character in the string.
- So, I used "n" null character for that. If you check the string then you can see that we are getting two null characters in complete string.
- I placed this check that when I get 2 null characters means I have got the complete string so I stopped receving the string.
- After that I simply count the charaters, in my string the sender mobile number is at posting 4 to 16 so I made a loop and save it in another array. and similarly did for the message text.
- Now when I send message after uploading this final code into my Arduino board, I get the below result on my Serial Monitor.
- Isn't it cool :) So, now we have separated the complete text as well as the sender's mobile number from our GSM string and we can use it anywhere we want.
- We can use this mobile number in the previous post code and can reply some text back and can also give a missed call to the user, anything we want. I am gonna post on How to send a call using SIM900 in the next post.
- You can buy the codefor How to Receive SMS with AT Commands using Sim900 and Arduino from our shop by clicking the below button:
Buy This Project
- I have highlighted all the functions in the code.
- As I always say, understand it first and then write on your own and do mistakes so that you learn.
That's all for today. I hope you have enjoyed this project named Receive SMS with AT Commands using Sim900 and Arduino. I will meet you guys in the next post. Till then have fun !!! :)
Arduino Lilypad Simulation in Proteus
Yesterday, I have posted a new Arduino Lilypad / Nano Library for Proteus in which we have seen how to add that library into Proteus so that you could be able to use these boards in Proteus. That was quite easy. Today I am gonna post a small project in which we will see how to use that library and produce an Arduino Lilypad simulation in Proteus. In this Arduino Lilypad simulation in Proteus, I am gonna use obviously he Arduino Lilypad board along with few LED lightsand will make them blink. Its also quite easy and you can also download the simulation and the hex file at the end of this project but I would suggest you to do it yourself so that you learn something out of it.
Before starting this project, you must have first integrated the Arduino Lilypad Library as without it you wont be abe to do this project. So, if you haven't downloaded it yet then you should read the previous post Arduino Lilypad / Nano Library for Proteus first. Lets get started with this project.
Arduino Lilypad Simulation in Proteus
- Now I assue that you have already downloaded the Arduino Lilypad Library for Proteus and are ready to use it within Proteus.
- So open Proteus ISIS and get these components from the Proteus components library as shown in below figure:
- After getting these components, draw a circuit in Proteus as shown in the below figure:
- You can clearly see in the above figure, the Arduino Lilypad Simulation in Proteus. After that you need to write a code for Arduino Lilypad so that you could get the hex file for it.
- In this project, I have used three LED lights and make them ON and OFF using the switch button. If the button is not pressed then the LEDs will remain ON and when you hit the button , the LEDs will go OFF.
- Copy the below code and paste it into the Arduino software and compile.
int analogPin = A0;
int ledCount = 3;
int ledPins[] = {
2, 3, 4};
void setup() {
// loop over the pin array and set them all to output:
for (int thisLed = 0; thisLed < ledCount; thisLed++) {
pinMode(ledPins[thisLed], OUTPUT);
}
}
void loop() {
// read the potentiometer:
int sensorReading = analogRead(analogPin);
// map the result to a range from 0 to the number of LEDs:
int ledLevel = map(sensorReading, 0, 1023, 0, ledCount);
// loop over the LED array:
for (int thisLed = 0; thisLed < ledCount; thisLed++) {
// if the array element's index is less than ledLevel,
// turn the pin for this element on:
if (thisLed < ledLevel) {
digitalWrite(ledPins[thisLed], HIGH);
}
// turn off all pins higher than the ledLevel:
else {
digitalWrite(ledPins[thisLed], LOW);
}
}
}
- After compiling this code, get the hex file of code. The hex file and this simulation file is also given at the end of this post so you can download it from there.
- Now upload this hex file into this Arduino Lilypad and hit the RUN button
Note:
- If everything's goes fine then as youhit the run button, the LEDs will get ON as shown in the below figure:
- Now, when you press the button, these LEDs will go OFF as shown in the below figure:
- That's all, you have successfully implemented the Arduino Lilypad simulation in Proteus. :)
- In order to download this simulation and the hex file, click on the below buttons.
Download Proteus Simulation
Arduino Lilypad Library for Proteus
Hello friends, few day ago I have posted a tutorial on how to do Arduino Simulation in Proteus. In that post, we have used an Arduino Library for Proteus but as this library is in its initial phases that's why currently it supports only three basic Arduino boards which are Arduino UNO, Arduino Mega2560 and Arduino Mega1280. But as we know there are numerous Arduino boards which are used these days. So, I searched a little and I came across this amazing Arduino Lilypad Library for Proteus which has the support for few other arduino boards, so I thought to share it with you guys. I have tested this library myself as always and its 100% working. I have tested it on Proteus 7 and I think it will work fine on Proteus 8 as well. As we have the support for above three boards in the previous library so the two new boards here are Arduino Lilypad and Arduino Nano, both of them are quite used these days. I have explained it in detail, step by step below, if you still feel problem in any step then ask in comments.This library has the support for following boards:
- Arduino UNO
- Arduino UNO SMD
- Arduino Mega
- Arduino Nano
- Arduino Lilypad
Note:
- This library isn't designed by our team so all credit goes to its creator, who is blogembarcado. Hats off dude !!!
- We are just spreading the knowledge so that more and more engineers could get benefit out of it.
- I have also posted Ultrasonic Sensor Library for Proteus, which you can download, using this library you can simulate Ultrasonic Sensor in Proteus, moreover you can also download different examples on Ultrasonic Sensor Simulation in Proteus to get a complete grip on this sensor.
Arduino Lilypad Library for Proteus
- First of all, download this new Arduino Lilypad Library for Proteus by clicking on the button below:
Arduino Lilypad Library for Proteus
- Once you downloaded the rar file, extract the file named as "BLOGEMBARCADO.LIB".
- Now place this file in the library folder of Proteus, which, in my case, is "C:\Program Files (x86)\Labcenter Electronics\Proteus 7 Professional\LIBRARY". I hope it will give you the idea where to place the file.
- After placing the file in this folder, now open the Proteus ISIS and click on the component selection button.
- In the search box write "Arduino" and the list of all the arduino boards will be shown immediately as shown in the below figure:
- You can see all the five boards in the above figure and you can select any of them.There's also another components in the list which is ultrasonic sensor. Yes, this library also supports ultrasonic sensor but I haven't tested it yet that's why didn't mentioned it, I will test this sensor soon and then will also explain its working.
- Now you can select any of these boards and can start working on them rite away. All the five boards are shown in the below figure:
- The two new Arduino boards in this library are shown below:
- So, now simply design your circuit and write the code in the Arduino ide. After writing the code, get the hex file from arduino software and upload it to these boards.
Note:
- In order to upload the hex file simply double click it and the properties window will pop up. In the Properties window, there will be an option named Program File. In this Program File, browse for the hex file and upload it.
- Now run your Proteus simulation and it will work like charm.
- I will post few projects on these boards soon as soon as I get time to write them, so stay tuned and have fun.
- I have posted a small project on how to use Arduino Lilypad in Proteus which you can read and download from Arduino Lilypad Simulation in Proteus.
Circuit Designing of LCD with Arduino in Proteus ISIS
Hello friends, I hope you all are doing great. Today, I am going to share Circuit Designing of LCD with Arduino in Proteus ISIS. In my previous tutorial, I have posted a tutorial on How to use Arduino Library in Proteus. Using that library, we can easily test Arduino code in Proteus to check whether its working or not. If you haven't read that post then before starting it, first read it, as without adding the arduino library we can't use Arduino in Proteus.
Coming to today's post, as we have done adding the Arduino Library in Proteus, so I thought to do some projects on it and the first one I chose is quite simple one i.e. Circuit Designing of LCD with Arduino in Proteus ISIS. So we will have a look on how to show some characters on LCD using Arduino in Proteus. If you are working on LCD then you should also have a look at my new post Scrolling Text on LCD using Arduino. Let's get started with Circuit Designing of LCD with Arduino in Proteus ISIS:
Circuit Designing of LCD with Arduino in Proteus ISIS
- First of all, design a circuit of LCD and Arduino in Proteus ISIS, if you have already added the Arduino Library then you won't find any problem in finding the Arduino in components library of Proteus.
- You should also download this New LCD Library for Proteus.
- Design the circuit as shown in below figure:
- Now, we need to design Arduino sketch for LCD, so open Arduino software and place below code into it.
- You should have a look at How to get Hex File from Arduino.
#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
void setup()
{
lcd.begin(16, 2);
lcd.print("www.TheEngineer");
lcd.setCursor(0,1);
lcd.print("ingProjects.com");
}
void loop() {}
Note:
- For Arduino code, I have used Liquid Crystal Arduino Library, which you can download from the below link and add it in the libraries folder of Arduino software.
Download LiquidCrystal Arduio Library
- If you haven’t bought your Arduino UNO and LCD yet, then you can buy it from this reliable source:
- Now compile the code, and get the Arduino hex file which will be in the tmp folder, you can read Arduino Library for Proteus to know in detail how to get the hex file of Arduino sketch.
- Now double click the Arduino in Proteus ISIS and properties window will pop up.
- In properties panel, under the Program File section, browse to Arduino hex file as shown in below figure and upload it.
- Now click Ok and Run your simulation, if everything goes fine then your LCD will start showing the characters as shown in below figure:
- You should also have a look at these Arduino Projects for Beginners.
- That's all, was it difficult ??? I dont think so :) Anyways, if you got into any trouble, do ask in comments.
- In the coming posts, we will explore Arduino in Proteus ISIS more. Till then take care !!!
Training Error: Recognition Failed in EasyVR
Hello friends, hope you all are fine and enjoying life. Today's post is about removing a small error named as Recognition Failed in EasyVR, which I encountered while working with EasyVR shield with Arduino UNO. I have posted a complete project on EasyVR shield around a year ago in which I haven't mentioned this error because at that time I didn't encountered it. But today while working with EasyVR shield, I encountered this problem so I thought to share it with you guys.
EasyVR shield is a voice recognition module which is used for recognizing voices and operating accordingly. Using this module, one ca quite easily control anything using voice. In the previous project, I have controlled a robot using voice commands like when I say Forward then it starts moving forward, when I say REVERSE then it start moving backward and so on. So, its quite a cool feature to be added in projects but its not the perfect one as the efficiency of this module is not even 50%, if you are operating in a noise environment then it won't work as you want it to work.So ,let's get started with How to solve Training Error: Recognition Failed in EasyVR.
Training Error: Recognition Failed in EasyVR
- First of all, I connected my EasyVR with Arduino UNO and run the EasyVR Commander.
- I selected the Com Port of my Arduino UNO and hit Connect.
- After that, I added a new command in EasyVR Commander and hit Train Command and it asked for Phase 1.
- Everything was working perfect but when I train my command i.e. said the word which I wanted to save in the command, I got the error written as "Training Error: Recognition Failed", shown in below figure:
- I tried again and again to train the command but the error keeps on continuing, which creates quite a problem for me.
- So, below are the steps, which I have taken in order to remove this error, its kind of a troubleshooting which is quite important to learn for an engineer.
How to solve Training Error: Recognition Failed in easyvr
- First of all, what you need to check is whether your EasyVR shield is working or not, which I did exactly. So, I remove the EasyVR shield from the Arduino UNO and upload a sketch in Arduino UNO. The sketch I uploaded in Arduino UNO is the test EasyVR sketch comes with the EasyVR library.
- After uploading the sketch, I connected my EasyVR shield with Arduino UNO and check its output and I got a sigh of relief that my EasyVR shield is working fine, so there's no problem with EasyVR.
- Now I again opened the EasyVR commander and this time I placed the J12 jumper no SW instead of PC, and start the training procedure and I was like surprised, it worked great.
- I think the new versions of EasyVR shield doesn't need the jumper to be on PC for training mode.
- In the project, I have mentioned it that place the Jumper J12 on PC while working with EasyVR Commander and place it on SW while working with Arduino UNO, which is now not applicable for the new version of EasyVR.
- So, simply, place your jumper J12 on SW position and it will work smoothly.
Note:
- EasyVR shield doesn't give the 100% result, it got impressed by the noise in the surroundings very quickly so whenever you are using EasyVR shield, make sure that you use it in a calm place. I even turn off my fan in order to make it work properly.
Finally, after resolving this issue, I trained five commands into it for moving a robot, which are shown below:
- That's all for today, hope it will help you guys in some way. Thanks !!!
Send SMS with Arduino UNO and SIM900D using AT Commands
Hello friends, today's post as the name suggests is about how to send SMS with Arduino UNO and SIM900D using AT Commands. There are different types of SIM900D modules available in the market, so it doesn't matter which module you are using. All SIM900D modules work at AT commands basically so today I am going to show you how to send an SMS via AT commands without using any Arduino library. You should first read the AT commands manual which will give you an idea about AT commands. AT commands are special sets of commands which are used for communicating with SIM900 module. Using these AT commands we let our GSM work for us. Like if you want to send SMS then there's a specific AT command for sending the SMS similarly if you want to change the PIN code for your GSM module then you have a different AT command. So, there are lots of AT commands available. We can interface this GSM module with any microcontroller like PIC Microcontroller or 8051 Microcontroller but here I have interfaced it with an Arduino board. You should also check How to Send SMS with PIC Microcontroller if you wanna use PIC Microcontroller instead of Arduino board.
You must also check GSM Library for Proteus, using this library you can easily simulate your GSM module in Proteus ISIS. Moreover, also have a look at Send SMS with Sim900D in Proteus ISIS in which I have designed a simulation of SMS sending in Proteus ISIS.
Note:
| Where To Buy? |
|---|
| No. | Components | Distributor | Link To Buy |
| 1 | SIM900 | Amazon | Buy Now |
| 2 | Arduino Uno | Amazon | Buy Now |
Components Used
I have shared the list of components used in this project. I am giving a comparison of three vendors below, you can buy from any of them:
Connect Arduino UNO with SIM900D
- First of all, connect Arduino UNO with SIM900D module, which isn't much difficult. If you have the module in hand then the first thing you need to do is to power it up and wait for the module to get connected.
- Usually, an LED is placed on the SIM900D module which keeps on blinking. If it's blinking fast, it means the modules haven't yet captured the signal. When the module captures the signal then the LED keeps on blinking but at lower speed.
- Now find the TX and RX pins of your SIM900D module and connect the TX of module with RX of Arduino UNO, which is pin # 0 and similarly RX of module with TX of Arduino UNO, which is pin # 1.
- The module, which I have used for my project is shown in the below figure, with labelled pin configurations and if you want to buy it in Pakistan then click here.
- One other thing mentioned in above figure is pKey, connect it with ground.
- Once your connections are ready, then upload the below sketch in your Arduino UNO and start sending messages.
void setup()
{
Serial.begin(9600);
}
void loop()
{
delay(1200);
Serial.print("AT");
delay(1200);
bool bOK = false;
while (Serial.available() > 0)
{
char inChar = (char)Serial.read();
bOK = true;
}
if(bOK)
{
index = 0;
Serial.println();
Serial.println("AT+CMGF=1"); // sets the SMS mode to text
delay(100);
delay(1200);
bool bOK = false;
while (Serial.available() > 0) {
//Serial.write(Serial.read());
char inChar = (char)Serial.read();
bOK = true;
}
if(bOK)
{
Serial.println();
Serial.print("AT+CMGS=""); // send the SMS number
Serial.print("+923004772379");
Serial.println(""");
delay(1000);
Serial.print("A new post is created by Zain."); // SMS body
delay(500);
Serial.write(0x1A);
Serial.write(0x0D);
Serial.write(0x0A);
}
}
}
- Change the mobile number with the number, on which you want to send the SMS, I have written mine.
- You should also change the body of the SMS and can write anything you wanna send as an SMS.
- The AT commands are required to send the SMS. I have added the comments in front of these commands but still if you get into any trouble, ask in comments.
- That's all for today, in the coming post, we will have a look how to receive SMS with SIM900 and Arduino.
Interfacing of EasyVR with Arduino
Hello friends, I hope you all are fine and having fun with your lives. In today's post we are gonna see Interfacing of EasyVR with Arduino UNO. In the previous post, we have seen Getting Started with EasyVR Commander. It was quite simple and if you follow the steps carefully you wont stuck anywhere but still if you into some trouble i am here.
Now this tutorial is quite a quick and important one as it contains the real code using which we will control our robot. After adding the voice commands, now close the EasyVR Commander and open the Arduino Software. Connect the arduino board with computer and double check that your jumper J12 in on position SW. You should also read
Training Error: Recognition Failed in EasyVR, if you got such error while working on EasyVR. So, let's get started with
Interfacing of EasyVR with Arduino UNO.
Interfacing of EasyVR with Arduino UNO
- First of all, download the Arduino Libraries for EasyVR Shield, you can easily find them from the official website of EasyVR.
- Simply connect your Arduino UNO with computer.
- Open the Arduino Software and copy paste the below code into it.
- Burn your code in the Arduino Board.
- Now open your Serial Monitor of ARduino UNO, and you will first see the message saying EasyVR Detected.
- Now speak any of the command you saved in the board on mic and you will see when the command match the serial terminal will send a specific character.
- You can change this character if you want to by make a simple change in the code.
#if defined(ARDUINO) && ARDUINO >= 100
#include "Arduino.h"
#include "SoftwareSerial.h"
SoftwareSerial port(12,13);
#else // Arduino 0022 - use modified NewSoftSerial
#include "WProgram.h"
#include "NewSoftSerial.h"
NewSoftSerial port(12,13);
#endif
#include "EasyVR.h"
EasyVR easyvr(port);
//Groups and Commands
enum Groups
{
//GROUP_0 = 0,
GROUP_1 = 1,
};
enum Group0
{
G0_ARDUINO = 0,
};
enum Group1
{
G1_FORWARD = 0,
G1_REVERSE = 1,
G1_LEFT = 2,
G1_RIGHT = 3,
G1_STOP = 4,
};
EasyVRBridge bridge;
int8_t group, idx;
void setup()
{
// bridge mode?
if (bridge.check())
{
cli();
bridge.loop(0, 1, 12, 13);
}
// run normally
Serial.begin(9600);
port.begin(9600);
if (!easyvr.detect())
{
Serial.println("EasyVR not detected!");
for (;;);
}
easyvr.setPinOutput(EasyVR::IO1, LOW);
Serial.println("EasyVR detected!");
easyvr.setTimeout(5);
easyvr.setLanguage(EasyVR::ENGLISH);
group = EasyVR::TRIGGER; //&lt;-- start group (customize)
pinMode(2, OUTPUT);
digitalWrite(2, LOW); // set the LED off
pinMode(3, OUTPUT);
digitalWrite(3, LOW);
pinMode(4, OUTPUT);
digitalWrite(4, LOW);
pinMode(5, OUTPUT);
digitalWrite(5, LOW);
pinMode(6, OUTPUT);
digitalWrite(6, LOW);
}
void action();
void loop()
{
easyvr.setPinOutput(EasyVR::IO1, HIGH); // LED on (listening)
Serial.print("Say a command in Group");
Serial.println(group);
easyvr.recognizeCommand(group);
do
{
// can do some processing while waiting for a spoken command
}
while (!easyvr.hasFinished());
easyvr.setPinOutput(EasyVR::IO1, LOW); // LED off
idx = easyvr.getWord();
if (idx >= 0)
{
// built-in trigger (ROBOT)
// group = GROUP_X; &lt;-- jump to another group X
return;
}
idx = easyvr.getCommand();
if (idx >= 0)
{
// print debug message
uint8_t train = 0;
char name[32];
Serial.print("Command: ");
Serial.print(idx);
if (easyvr.dumpCommand(group, idx, name, train))
{
Serial.print(" = ");
Serial.println(name);
}
else
Serial.println();
easyvr.playSound(0, EasyVR::VOL_FULL);
// perform some action
action();
}
else // errors or timeout
{
if (easyvr.isTimeout())
Serial.println("Timed out, try again...");
int16_t err = easyvr.getError();
if (err >= 0)
{
Serial.print("Error ");
Serial.println(err, HEX);
}
group = GROUP_1;
}
}
void action()
{
switch (group)
{
// case GROUP_0:
// switch (idx)
// {
// case G0_ARDUINO:
// write your action code here
// group = GROUP_1; //&lt;-- or jump to another group X for composite commands
// break;
// }
// break;
case GROUP_1:
switch (idx)
{
case G1_FORWARD:
Serial.print("9");
digitalWrite(2, HIGH);
break;
case G1_REVERSE:
Serial.print("Q");
digitalWrite(3,HIGH);
break;
case G1_LEFT:
Serial.print("X");
digitalWrite(4,HIGH);
break;
case G1_RIGHT:
Serial.print("Y");
digitalWrite(5,HIGH);
break;
case G1_STOP:
Serial.print("Z");
digitalWrite(6,HIGH);
break;
}
break;
}
}
So, that's all for today. I hope now you can easily Interface
EasyVR with Arduino UNO. Have fun and take care !!! :)