Category: embedded

Heart Beat Monitoring using PIC Microcontrolle…

Heart Beat Monitoring using PIC Microcontroller and Pulse Sensor

Heart Beat rate is most important parameter in monitoring any person’s health. In the modern era of wearable devices, there are lot of devices which can measure heartbeat, blood pressure, footsteps, calories burnt and lot of other things. These devices has pulse sensor inside them to sense the pulse rate. Today, we will also use a pulse sensor with PIC Microcontroller to count heart beat per minute and the Inter-Beat Interval, these values will be further displayed on 16×2 character LCD. We will use PIC16F877A PIC microcontroller in this project. Check out the complete project here:

What is PWM

What is PWM

While ADC is used to read Analog signals by a digital device like microcontroller. A PWM can be considered as an exact opposite of it, PWM is used to produce Analog signals from a digital device like microcontroller. In this article we will learn about what is PWM, PWM signals and some parameters associated with it, so that we will be confident in using them in our designs.

Learn about the PWM signals, here:

Thermal Printer interfacing with PIC16F877AIn …

Thermal Printer interfacing with PIC16F877A

In this tutorial, we will interface a thermal printer CSN A1 with widely used PIC microcontroller PIC16F877A. Here in this project, a thermal printer is connected across PIC16F877A and a tactile switch is used to start the printing. A notification LED is also used to notify the printing status. It will glow only when the printing activity is going on.

Check the complete project details:

RFID Interfacing with PIC Microcontroller

RFID Interfacing with PIC Microcontroller

To read the Passive RFID cards and tag, we need a microcontroller with UART hardware. If we select a microcontroller without UART, we need to implement software UART. Here we are using PIC Microcontroller PIC16F877A for interfacing RFID. We will simply read the unique identification no. of RFID tags and display it on 16×2 LCD.

Check out the complete tutorial:

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STM32F103C8 ADC Tutorial – Measuring Analog Vo…

STM32F103C8 ADC Tutorial – Measuring Analog Voltage

The ADC embedded in #STM32 microcontrollers uses the SAR (successive approximation register) principle, by which the conversion is performed in several steps. The number of conversion steps is equal to the number of bits in the ADC converter. Each step is driven by the ADC clock. Each ADC clock produces one bit from result to output. The ADC internal design is based on the switched-capacitor technique.

Learn more about STM32 ADC Feature, visit:

Programming STM32F103C8 Board using USB Port

Programming STM32F103C8 Board using USB Port

In our previous tutorial we learnt the basics of the STM32 Development Board and also programmed it to blink an LED. But there was one huge drawback with it. In order to program the Board we utilised a FTDI programmer module and also had to toggle the boot 0 jumper between and 1 position while uploading and testing a code, which is surely a daunting task. Also the mini-USB port on the Development board was left totally unused. The reason for doing that is, when the STM32 development board is purchased it does not come with an Arduino ready boot loader and hence the board will not be discovered by your computer when connected through the USB.
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STMicroelectronics Updates Free Embedded Softw…

STMicroelectronics Updates Free Embedded Software for Enhanced LoRaWAN Experience

STMicroelectronics is making its I-CUBE-LRWAN Expansion Package for the STM32 family of microcontrollers in accordance with the recently approved LoRaWAN 1.0.3 specifications from the LoRa-Alliance, making it more secure, expanding the possibilities for Internet-of-Things (IoT) applications that operate on Low-Power Wide Area Networks (LPWAN).

What is Rotary Encoder and How to Use It w…

What is Rotary Encoder and How to Use It with Arduino

A Rotary encoder is an input device which helps the user to interact with a system. It looks more like a Radio potentiometer but it outputs a train of pulses which makes its application unique. When the knob of the Encoder is rotated it rotates in form of small steps which helps it to be used for stepper/Servo motor controlling, navigating through a sequence of menu and Increasing/decreasing the value of a number and much more.

Learn more about the rotary encoder here:

Interfacing HC-05 Bluetooth module with AVR …

Interfacing HC-05 Bluetooth module with AVR Microcontroller

In this tutorial let us learn How to interface HC-05 Bluetooth Module with AVR ATmega8 microcontroller. We will establish communication between Android mobile and Atmega8 through Bluetooth module which takes place through UART serial communication protocol. In this project we will control a LED using Bluetooth of our smartphone.

PIC16F877A Microcontroller Based Digital Alarm…

PIC16F877A Microcontroller Based Digital Alarm Clock

This alarm clock will have an 16×2 LCD display which will display the current time and set time. We will use few push buttons to set the alarm time whenever required. The current time will be kept in track using the DS3231 RTC module and we will use IIC communication to get these values from the RTC module