ESP – 32 is a low cost, low power microcontroller. It has integrated Wi-Fi, and Bluetooth. It employs Tensilica Xtensa LX – 6 microprocessor, Xtensa LX – 5 microprocessor or RISC – V microprocessor. It has built – in antenna, switches, power amplifier, filters and power modules.

Features:

• CPU: Xtensa single core 32 bit LX6 microprocessor.

Operating: 160 MHZ

• Memory: 32 KB

• Connectivity:

Wi – Fi: 802.11 b/g/n

Bluetooth: v4.2 BR/EDR and BLE (shares the radio with Wi-Fi)

Peripheral Interface:

34 × programmable GPIOs 

 12-bit SAR ADC up to 18 channel

2 × 8-bit DACs 

10 × touch sensors ( capacitive sensing GPIOs)

4 × SPI 

2 × I2S interfaces

2 × I2C interfaces

3 × UART 

SD/SDIO /CE - ATA /MMC /eMMC host controller

SDIO/SPI slave controller

Ethernet MAC interface with dedicated DMA and planned IEEE 1588 Precision Time Protocol support

CAN bus 2.0

Infrared remote controller (TX/RX, up to 8 channels)

Pulse counter (capable of full quadrature decoding)

Motor PWM 

LED PWM (up to 16 channels)

Hall effect sensor

Ultra low power analog pre-amplifier

• Security:

IEEE 802.11 standard security features all supported, including WPA, WPA2, WPA3 (depending on version) and WLAN Authentication and Privacy Infrastructure (WAPI)

Secure boot

Flash encryption

1024-bit OTP, up to 768-bit for customers

Cryptographic hardware acceleration: AES, SHA - 2, RSA, Ellipric Curve Cryptography (ECC),Random Number Generator (RNG)

• Power management:

Internal low dropout generator 

Individual power domain for RTC

μA deep sleep current

Wake up from GPIO interrupt, timer, ADC measurements, capacitive touch sensor interrupt

• Interfacing an LED:

Connect the positive end of the LED to 100 Ohm resistor. Connect another end of the resistor to pin 18. Connect the negative end to GND. 

Code:

/*ESP32 LED BLINK

*/

#define 18

Void setup() {

//set pin 

Pinmode (18,OUTPUT);

}

void loop {

delay (500);

digitalWrite(18,HIGH); //LED TURN ON

delay(500);

digitalWrite(18,LOW); //LED TRM OFF

}

• Interfacing a switch:

Components:

1 push button switch

1 LED

2 Resistors 100 ohm

Jumper wires

Bread board

Circuit:

Check the switch connectivity with a multimeter. Place the switch on the breadboard (please refer to the image). Connect one pin to Pin 15 of ESP 32. Connect a resistor in series with Pin 18 and GND. Connect another pin to 5V of ESP 32. On the other side, Place a LED on the breadboard. Connect a resistor in series with Pin 19 and positive terminal of LED. Ground the negative terminal. 

• Working: 

When we press the switch the circuit gets completed pin 15 gets 5V. This is a pull up mode. When the resistor is connected between +Vcc and switch it is in pull up mode. When the resistor is connected between switch and GND it is pill down mode. We can use any of the two.

As pin 15 gets a signal we turn Pin 22 high. Thus the LED glows.

• Code: 

#define 15

#define 22

void setup() {

//declare pin 15 as input

pinMode(15, INPUT);

//declare pin 22 as output

pinMode(22,OUTPUT);

}

void loop() {

//checkes the pin is high or low, condition statement

//if switch is ressed LED will turn on else will remain off

if (15==HIGH)

{

digitalWrite(22,HIGH);

}

else

{

digitalWrite(22,LOW);

}

}

Thus we have seen how to interface a LED and a switch with ESP 32. After going through this you would surely be able to use the GPIO pins. 

Are you an Arduino enthusiast who loves to experiment with circuits and codes? Do you use simulation software like Proteus to test your circuits before you implement them? If yes, then you must have faced the challenge of finding the right models for simulating the Arduino UNO board. 

Don’t worry In this article, we are going to share Arduino UNO Library for Proteus and will see different Simulation software like Proteus.

What is Arduino UNO Library for Proteus?

Arduino UNO Library for Proteus is a simulation model for the Arduino UNO board. It is a software library that can be used to test your codes and circuits before uploading them to the physical board. The library is compatible with Proteus, making it an essential tool for Arduino enthusiasts.

Why to use Proteus?

The Proteus and other simulation software offers several advantages. Here are a few reasons why you should use it:

1. Saves time and money: With different simulation modules and their libraries, you can test your codes and circuits in simulation software before implementing them on the physical board. This way, you can detect and fix any issues before spending money on components and wiring.

2. Accurate simulation: It contains accurate simulation models for the Arduino UNO board and other controllers. This ensures that your simulation results are close to what you would get on the physical board.

3. Easy to use: Proteus is easy to use, even for beginners. It comes with clear instructions and documentation, making it easy to get started.

Download Proteus Software

Now let’s see how to install and use the arduino library to simulate in Proteus:

1. Download the Arduino UNO library for Proteus

2. In this downloaded zip file you will find two files, named as:

 a)  ArduinoUnoTEP.dll

 b)ArduinoUnoTEP.idx

3. Now extract these two files and place it in the libraries folder of your Proteus Software.

4. Now, open your Proteus software and search for Arduino as shown in below image.

5. Now select this Arduino board and click OK

6. Now place this Arduino UNO board in your Proteus workspace and it look as shown in below image

7. Now we have our Arduino Board in proteus,  double click this board in order to open its Properties.

8. Now here you can set different properties of the Arduino UNO board.

9. You need to upload the hex file of your Arduino code in the program file.

10. So, once you have the hex file of your code then upload it here and click OK.

And that’s it after successfully compiling the hex file, your simulation will start running and you can perform multiple functions as per the application you want.

There are Multiple Simulation software available such as:

1. TinkerCad

2. Eagle

3. Multisim

4. Matlab

You can also try these once you got hands-on Proteus.

Conclusion:

The Arduino UNO Library for Proteus and other simulation software is an essential tool for anyone interested in Arduino and Iot related projects. 

For more such details and updates on electronics do follow regular our blogs and if you are looking to buy Arduino Uno and different microcontrollers reach out Campus Component today!

In this article, we will learn how to interface a GSM Module with an Arduino Microcontroller.

As we can see the ever increasing technology in our day to day life we are becoming more reliant on technology. And the recent rise of development in IoT(Internet of things) has boosted this process to a mainstream.

We’re using the Internet of things in agriculture, in our homes, in industries, and the applications and their uses are increasing day by day.

As the applications of IoT are rapidly increasing, we need more applications to work wirelessly and which are operable from any location on earth.

Check out our different Wireless Modules

Previously IoT devices were operable mostly over wifi. For devices to work over wifi, the operation and controlling range becomes limited to the wifi range. So to increase the operation range GSM based technology has been used in IoT to control the device from anywhere on the earth and manage it as per your application.

In this article we will discuss how to interface a GSM module and Arduino so that you can start building your own GSM based IOT product.

Here we will be using SIM A7672S LTE CAT 1(4G) gsm module from SIMCOM and Arduino UNO board which are the two most popular development modules and also it got the best support from hobbyists and the developer community. So let’s begin on how to connect physical objects and the outside digital world in totally new and creative ways.

See different GSM modules from SIMCOM:

Let’s see some of the General features of SIMCOM Sim A7672S and Arduino UNO

SIMA7672S features:

A7672S is the LTE Cat 1 module which supports wireless communication modes of LTE-FDD/GSM/GPRS/EDGE. It supports a maximum 10Mbps downlink rate and 5Mbps uplink rate. A7672S adopts LCC+LGA form factor and is compatible with SIM7000/SIM7070 series (NB/Cat M modules), and SIM800A/SIM800F(2G modules), which enables smooth migration from 2G/NB/Cat M products to LTE Cat 1 products, and greatly facilitates more compatible product design for the customer needs.

●      Power supply VBAT : 3.4V ~4.2V, Recommended VBAT: 3.8V GPRS multi-slot class 12/10.

●      Power saving : Current in sleep mode TBDCompliant to GSM phase 2/2+

●      LTE power level: 3 (23dBm±2.7dB)

●      TDD/FDD-LTE category 1 : 10 Mbps (DL),5 Mbps (UL)

●      GSM/LTE antenna interface

●      GNSS antenna interface(optional)

●      Bluetooth antenna interface(optional)

Arduino UNO:

Arduino UNO is a microcontroller board based on the ATmega328P. It has 14 digital input/output pins, 6 can be used as PWM outputs, 6 analog inputs, a 16 MHz ceramic resonator, a USB connection, a power jack, an ICSP header and a reset button. It contains everything needed to support the microcontroller for IoT projects with Arduino IDE code editor.

See different microcontrollers available from best in the industry standards

• The operating voltage is 5V

• The recommended input voltage will range from 7v to 12V

• The input voltage ranges from 6v to 20V

• Digital input/output pins are 14

• Analog i/p pins are 6

• DC Current for each input/output pin is 40 mA

• DC Current for 3.3V Pin is 50 mA

• Flash Memory is 32 KB

• SRAM is 2 KB

• EEPROM is 1 KB

• CLK Speed is 16 MHz

Integrating SIM800C with Arduino:

Components

• Sim A7672S development module

• Arduino UNO board 

• Micro SIM Card

• USB cable (Arduino to computer)

• Jumper wires for connections

Software

• Arduino IDE (Installed to your PC)

Pin connections:

Arduino UNO                                                                 SIM A7672S

After your connections are successfully made, insert your sim card inside the module, open Arduino IDE and copy the following code in the editor:

For this example we are going to use Software Serial Library. which is used to communicate between the Arduino and the GSM

Code:

#include <SoftwareSerial.h>

SoftwareSerial A7672S(7,8); //RX TX

void setup() {

Serial.begin(9600){

 A7672S.begin(9600);

 Serial.println("Setup Complete");

}

void loop() {

 while(A7672S.available()){

 Serial.write(A7672S.read());

 }

 while(Serial.available()){

 A7672S.write(Serial.read());

 }

}

Results:

After opening the Serial Monitor, you should get the following response:

After this type “AT” in the Serial input bar. If no SIM card is present, a Serial reply of “OK” is expected. If a SIM card is present, the response would be “OK” followed by “Call Ready” and “SMS Ready.”

You may now proceed to input SIM800C AT commands through which you can perform various operations like sending/receiving SMS, dialing and receiving calls, downloading content from the internet, uploading any important file to the cloud, etc..

Conclusion:

Using the above process you can make GSM modules work as per your requirements, there are many AT commands which you can explore. There are also different modules from simcom and more addon functionality microcontrollers from Espressif available at Campus Component.

As the use of GSM in making IoT products is increasing, this opens a huge range of products and technology which will be based on GSM. We can make different projects using GSM and Arduino, eg. in smart agriculture, smart homes, smart road lights and many applications related to large industries.

If you are looking for electronic components by SIMCom and different microcontrollers, reach out Campus Component today!

Related Blog:

1. Types of Arduino Boards and Their Comparison

The Arduino board was created at the Ivrea Interaction Design Institute with beginners in electronics and programming in mind. This board began changing to meet new demands and difficulties, evolving from straightforward 8-bit boards to solutions for the Internet of Things (IoT) applications, 3D printing, wearable technology, and embedded environments. All boards are completely open-source, allowing users to construct them independently and then customize them to meet their own requirements.

What Are the Types of Arduino Boards?

There are several different types of Arduino boards, each designed for different purposes and featuring different sets of capabilities. Some of the most popular types of Arduino boards include the Arduino Uno, the Arduino Nano, the Arduino Mega, the Arduino Leonardo, and more- 

1. Arduino Nano- 

The diminutive Arduino Nano is an Arduino UNO that can fit on a breadboard. It is functionally similar to the Arduino UNO in several ways but has a smaller size factor. The absence of a DC power jack, the use of a Mini USB port rather than a USB B port, and the USB-TTL converter chip are the only significant differences from the UNO. Instead of an ATMega16U2, Nano employs an FT232, a specific USB-UART bridge chip from FTDI. Similar to UNO, it is a very popular option among developers due to its tiny size and low cost.

2. Arduino UNO R3- 

The most well-known and often utilized development board is the Arduino Uno. An ATMega328P microcontroller powers it. It is the most often used option in the community since it is affordable, simple to learn how to use, and has a selection of prefabricated modules that make it simpler to construct new projects or prototypes. It has 14 digital I/O ports, including SPI, I2C, and UART standard communication ports, as well as 6 8-bit PWM pins, 6 10-bit analog inputs, and 6 digital I/O pins.

3. Arduino PRO Mini

Actually, Pro mini is a scaled-down version of Nano. It has many of the same features as an Arduino Nano, however, neither a USB port nor an internal USB-TTL bridge is included. Rather, it features a header from which the UART pins protrude. Using an external USB-UART module, we may program the Pro mini using these pins. This board is specifically designed for applications with constrained space. There are two versions of the Pro Mini: 3.3V and 5V. Due to the restrictions placed on the ATMega328 for increased stability, the CPU speed in the 3.3V version is limited to 8MHz.

4. Arduino Micro

The Arduino Micro is essentially a Leonardo in a small form factor breadboard-friendly sized board, similar to how Arduino Nano is a UNO in a small form factor. Its features are identical to those of the Arduino Leonardo. The absence of a DC input jack is the only difference. Arduino Micro can perform these functions similarly to HID or virtual COM port devices.

5. Arduino Leonardo

An ATmega32U4 chip, as opposed to the ATMega328P chip included in all of the mentioned boards, powers the Arduino Leonardo. It contains additional IO pins (20), PWM pins (7), and analog input pins (12). The ATMega32U4 has built-in USB communication, which eliminates the need for a second processor or a separate USB to UART bridge chip. This is another significant difference. This enables the board to establish a Human Interface Device (HID) or Virtual (CDC) serial / COM port connection with a computer. The bootloader and this Virtual COM port are used to program the Leonardo.

6. Arduino Nano Every

A next-generation board in a compact size factor is the Arduino Nano Every. The Arduino Nano is the preferred board for many projects that call for a compact and affordable solution, as we've already described. The Arduino Nano Every may be compared to an updated Arduino Nano with a lot more features. The ATMega4809, a more potent processor, powers Nano Every. We can use this board for larger programs thanks to its 200% more RAM and 50% more program capacity. We may utilize the Nano Every on a PCB without the header pins thanks to the castellated holes.

7. Arduino Mega2560 Rev3

Of all the boards we have discussed thus far, the Arduino Mega 2560 is the largest. It is made for applications that require a lot of peripherals or I/O. The ATMega2560, a larger and more powerful CPU, powers it. This board features 54 I/O pins (of which 15 can be used as PWM outputs), 16 analog inputs, and 4 UARTs, more than most other boards. Compared to most other basic Arduino boards, it features more flash storage and SRAM. It is most well-liked by the open-source PLC and CNC communities as well as the 3D printing communities.

What Are the Main Differences between These Boards?

The Arduino Uno is one of the most commonly used Arduino boards. It features a microcontroller, a USB port, a power jack, and digital and analog input/output (I/O) pins. The Uno is a good choice for beginners and for projects that don't require a lot of complex processing or a lot of I/O pins. The Arduino Nano is a smaller version of the Uno. It has the same microcontroller and I/O pin layout as the Uno, but it is much smaller and more compact. This makes it a good choice for projects where space is at a premium, such as when building a project into a small enclosure or when trying to minimize the size of your project.

The Arduino Mega is a larger version of the Uno. It has more I/O pins, more memory, and more processing power than the Uno or Nano. This makes it a good choice for projects that require a lot of processing power or that need to interface with a lot of external devices. The Arduino Leonardo is similar to the Uno, but it has some key differences. It has a microcontroller that is capable of emulating a keyboard or mouse, which makes it a good choice for projects that need to interact with a computer. It also has a built-in USB connection, which makes it easy to connect to a computer without the need for a separate USB-to-serial adapter.

Overall, the type of Arduino board you choose will depend on the specific needs of your project. If you're just getting started with Arduino and don't have a specific project in mind, the Arduino Uno is a good place to start. As you gain more experience and have more specific requirements for your projects, you can choose from the other available boards to find the one that best meets your needs.

Conclusion- 

Arduino boards are popular among hobbyists, makers, and students because they are versatile, easy to use, and affordable. Arduino boards are open-source, which means that the hardware and software designs are freely available and can be modified by users. This makes Arduino boards a good platform for experimentation and learning.

Arduino boards are easy to use, even for beginners. They come with a simple and intuitive programming environment that allows users to quickly create and upload code to the board. Arduino boards are widely supported, with a large community of users and developers who share knowledge, resources, and projects online. This makes it easy for users to find help and support when they need it.

Arduino boards are versatile, with a wide range of different models available that cater to different needs and applications. This allows users to choose the right board for their project, whether it is a simple hobby project or a complex industrial application. Arduino boards are affordable, with prices starting at just a few dollars for some of the basic models. This makes them a good option for those on a budget or for those who are just starting out with electronics and programming. If you are looking for more products from top manufacturers like Arduino, visit Campus Component to find a wide range of products including the above-discussed products and Arduino Atmega328p, Arduino cable, Arduino shield, and much more. Visit us to know more today!

Related Blog:

1. What are the key Features of Microcontroller 

2. Things You Should Know Before Buying ESP8266 Wifi Module