Ashutosh Bhatt

Note: it’s recommended to follow this VHDL tutorial series in order, starting with the first tutorial. In the previous tutorial, we designed a clocked SR latch circuits using VHDL (which is a very high-speed integrated circuit hardware description language). For this project, we will: Write a VHDL program to build a D flip-flop circuit Verify the…

In the previous tutorial VHDL tutorial, we designed an 8-bit parity generator and 8-bit parity checker circuits using VHDL. (If you are not following this VHDL tutorial series one by one, you are requested to go through all previous tutorials of these series before going ahead in this tutorial) In this tutorial, We shall write…

In the previous tutorial VHDL tutorial, we designed 8×3 encoder and 3×8 decoder circuits using VHDL. (If you are not following this VHDL tutorial series one by one, you are requested to go through all previous tutorials of these series before going ahead in this tutorial) In this tutorial, We shall write a VHDL program…

Note: it’s recommended to follow this VHDL tutorial series in order, starting with the first tutorial. In the previous tutorial, VHDL tutorial – 14, we designed two circuits using VHDL: a 1×8 de-multiplexer and a 8×1 multiplexer. In this project, we will, Write a VHDL program to build a clocked SR Latch (flip-flop) circuit Verify the…

Note: it’s recommended to follow this VHDL tutorial series in order, starting with the first tutorial. In the previous tutorial – VHDL tutorial 16 – we designed a D flip-flop circuit by using VHDL. For this project, we will: Write a VHDL program to build a JK flip-flop circuit Verify the output waveform of the program…

Note: it’s recommended to follow this VHDL tutorial series in order, starting with the first tutorial. In previous tutorial, VHDL tutorial – 17, we designed a JK flip-flop circuit by using VHDL. For this project, we will: Write a VHDL program to build the T flip-flop circuit Verify the output waveform of the program (the digital…

The article discusses designing a servo motor angle controller using the IC NE555. The servo motor used here for an experiment is an 11-gram micro servo motor with the following specifications. Rotational range                                    160o Operating voltage     …

RGB LED is a combination of three LEDs red-green-blue together. It has four terminals – either anode or cathode, and the other three are for these three colors. Interestingly, when two colors inside the LED are turned ON simultaneously, the LED gives a different color. Also, as the amount or intensity of any color in…

In this article, we will be detecting a forest fire using an IoT sensor network and making a portable device with battery operation. Getting information about a fire hazard in a forest in time can prevent the forest fire from spreading. The sensor network can give the particular location of the fire as we already…

If you search on Google or youtube for LED chasers, you will find quite a bit of LED chasers. And here also, by just looking at the title, you will say, “one more LED chaser!!!!… Oh, No, please!!!!” But wait, wait, wait. This is somewhat different. Most of the LED chasers are of single colour…

In the previous tutorials in this series, we have seen how to generate different chasing effects by blinking LEDs. So we were simply turning the LED ON and OFF. In this tutorial, we shall vary the brightness (intensity) of LED. We shall use the PWM output of ATtiny85 to do this. So let’s see how…

In previous tutorials of this series, we saw how to vary the intensity (brightness) of LEDs using the PWM output of ATtiny85. This tutorial shall take it to the next step by varying LED brightness using a potentiometer (pot). The pot will give an analog output of 0 to 5V. ATtiny85 has an inbuilt ADC…

In the previous two tutorials of this series, we have seen how to vary the intensity (brightness) of LEDs using the PWM output of ATtiny85. In this tutorial, we shall use a PWM output to vary the speed of a DC motor. DC Motor speed varies as the potentiometer is varied. As we have learned…

In the previous three tutorials of this series, we saw how to vary the intensity (brightness) of LED and DC motor speed using the PWM output of ATtiny85. In all those previous tutorials, we used only one PWM output, but now we shall simultaneously use three PWM outputs of ATtiny85. ATtiny85 has three PWM outputs…

In this tutorial series, we have learned about interfacing potentiometer to get analog input, interfacing of RGB LED by generating PWM output, DC Motor speed control using PWM output, and some other things. This tutorial explains the serial communication of ATtiny85 with Bluetooth module HC05. ATtiny85 does not have built-in UART or USART with Rx…

In the previous tutorial, we have learned how ATtiny85 serially communicates with Bluetooth module HC05 and send/receive commands from smartphone Bluetooth This tutorial also involves the role Bluetooth module HC05. But instead of receiving commands from a smartphone, it sends sensor data values to the smartphone. The sensor is connected to an analog input pin…

In the previous tutorial, we learned we need the following hardware and software tools to build any application using ATtiny85. Arduino IDE software USB SPI AVR programmer PROGISP software So let us build the first LED blinking, “hello world” application for the ATtiny85 microcontroller. Open Arduino IDE. Open LED blinking example from file->example->basic->blink Modify the…

Complete robot is combination of three subsections: Robotic mechanism, Hardware driver circuit, controlling software in VC++.Obviously, the main part will be the mechanism that actually forms the body of robot means moving hand that picks or places any object. Function of hardware driver circuit is to drive all three motors and actuates all the motions of robot. Controlling software is also an important part of this robot because it will take care of all controlling actions. The main functions of this section are: Rotate the hand to one specific angle from where the object should be picked or to be placed, Move the hand up or down to pick or place the object, and Open or close the grip of hand depending upon size of object. 

UMPS is perhaps most efficient virtual simulator for simulating the programs of 8051/52/2051/4051, PIC micro controllers, HC micro controllers, AVR microcontrollers etc. It provides perfect platform for simulating real time applications. It has wide varieties of peripherals to connect with micro-controllers like in display there are LED, matrix LED, alpha numeric display, all type of LCD etc. Other peripherals like ADC, DAC, serial transmitter-receiver, function generator, I2C memory, I2C display, PWM converter, digital recorder and player, shift register etc. are given to design any embedded system. With the help of umps, one can create virtual 8051 training board on his computer’s desktop. He can simulate all kind of programs by connecting required resources like 7 segment display, Matrix LED, LCD, Matrix keyboard and all he wants. 

This is programmable FM remote control can be used for some specific applications. Phase Lock Loop (PLL) IC-567 is used in transmitter and receiver part as oscillator and filter respectively. It can operate/control any device / application from the distance of around 50 meter (this range can be increased up to 1-2 Km if good…