Tuesday, September 4, 2018

IoT Project: Air Pollution Meter With Digital Dashboard On Smartphone using Blynk

Eltronicschool. - This is one of the application of Internet of Things for any project such as for building air pollution mater with digital dashboard on smartphone using Blynk appication.

The main component are used to build this project are temperature and humidity sensor DHT11, Arduino UNO with Ethernet shield, PM2.5/PM10 sensor (SDS011), and power supply.

For the application (App) as the web server using Blynk. Blynk is an Internet of Things (IoT) platform to control Arduino, Raspberry Pi and the like over the Internet. In this project Blynk provides a digital dashboard on your smartphone that displays real-time air quality readings for the immediate surroundings.

Blynk is not meant for a specific board or shield. It will get you online and ready for the IoT, irrespective of whether Arduino or Raspberry Pi is linked to the Internet over Wi-Fi, Ethernet or an ESP8266 chip.

In this project, we will show you about the circuit schematic of the IoT enabled air pollution meter with digital dashboard, main component used, and the global description about this project.

Circuit Schematic

Component Part
  1. Temperature and humidity sensor DHT11, 
  2. Arduino UNO with Ethernet shield, 
  3. PM2.5/PM10 sensor (SDS011), and 
  4. Power Supply
Description

Circuit schematic like in Figure 1 above is the IoT enabled air pollution meter with digital dashboard. Electronicsforu site describe that Heart of the circuit is Arduino Uno board with Arduino shield. Other components used are voltage regulators 7805 (IC1 and IC2), temperature and humidity module DHT11 connected to connector CON3, gas sensor MQ135 connected to connector CON2, PM2.5/PM10 sensor connected to connector CON1 and a few others.

PM2.5/PM10 sensor (SDS011)

Particle pollution, also called particulate matter (or PM), is a mixture of solid particles and liquid droplets floating in the air. Some particles are released directly from a specific source, while others are formed in complicated chemical reactions in the atmosphere.

The PM2.5/PM10 sensor connected across CON1 was developed by INOVAFIT, which is a spin-off from University of Jinan, China. It uses the principle of laser scattering in the air, and can detect suspended particulate matter concentration ranging from 0.3 to 10 microns. Data collected by the sensor is stable and reliable. SDS011 sensor is connected to UART port (TX and RX) of Arduino Uno board.

Gas sensor (MQ135)

Sensitive material of the sensor is tin-dioxide, whose conductivity increases with the concentration of gas. Change in conductivity is converted into output voltage signal, which varies corresponding to the concentration of combustible gas. MQ135 is highly sensitive to ammonia, sulphide and benzene steams, smoke and other harmful gases. It is a low-cost sensor, suitable for different applications. Output of the gas sensor is connected to analogue input pin A3 of Arduino Uno board through connector CON2.

Temperature and humidity sensor (DHT11)


This composite sensor contains calibrated digital signal outputs of temperature and humidity. Connected to connector CON3, it includes a resistive-type humidity measurement component and an NTC temperature-measurement device. Its output pin is connected to digital pin 5 of Arduino Uno board. It is a relatively inexpensive sensor for its performance.

Tuesday, July 31, 2018

Circuit Schematic HC-SR04 Ultrasonic Range Sensor

Eltronicschool. - This is one of the ultrasonic range sensor for you in this time to show you one of the circuit schematic of HC-SR04 ultrasonic range sensor like shown in Figure 1 below.

In this project with circuit schematic of HC-SR04 ultrasonic range sensor, you will show an how you can build the power inverter using special low cost in this time. 

Circuit Schematic

Figure 1. Circuit Schematic of HC-SR04 Ultrasonic Range Sensor (Source: Electroschematics)

Component Part
  1. STC11F (single-chip microcontroller, based on 1T architecture 80C51 CPU)
  2. MAX232 (dual EIA-232 driver/receiver)
  3. TL074 (low-noise JFET-input operational amplifier)
  4. 40-KHz ultrasonic transmitter and receiver pair (40T/R-B/W)
Description

According Electroschematics site describe thatthe HC-SR04 ultrasonic range sensor is a pretty cool pre-wired module that you actually enjoy using when you start playing with electronics, microcontrollers, and robotics. As you might have noticed, the most popular version of the module (comprised of an ultrasonic transmitter, ultrasonic receiver, and control electronics) has four interface pins — Vcc (5 V), Gnd (0 V), Trigger (Pulse In), and Echo (Pulse Out). The operating current of the module is about 15 mA at 5-V DC input, and its operating frequency is 40 KHz. The measuring range of the module is in the 2- to 400-cm range with a measuring angle of 15°.

Thursday, July 19, 2018

Circuit Schematic Signal Tracer Circuit using 741 IC

Eltronicschool. - This is one of the tester for signal tracer project for you in this time to show you one of the circuit schematic of signal tracer circuit using 741 IC look like shown in Figure 1 below.

In this project with circuit schematic of Signal Tracer Circuit using 741 IC, you will show an how you can build the power inverter using special low cost in this time. 

Circuit Schematic

Figure 1. Circuit schematic of Signal Tracer Circuit using 741 IC (Source: Circuitstoday.com)

Component Part
  1. Transistor
  2. 741 IC
  3. Capacitors
  4. Resistors
  5. Speaker
  6. Variable Resistor
  7. Detail component value see in Figure 1.
Description

Circuit schematic like in Figure 1 above is Signal Tracer Circuit using 741 IC. The main component in this circuit schematic is transistors and 741 IC.

According Circuitstoday site describe that a high gain amplifier circuit that can be operated from a battery pack of 6 or 9 volt battery pack is shown here.The IC1 uA 741 is wired as a high gain non-inverting amplifier and its output is amplified by a pair of complementary transistors (Q1 & Q2) to drive the speaker.The negative feedback from the common emitter junction of the two transistor stabilizes the gain of the circuit.The resulting audio output is sufficient to serve as a signal tracer.

Wednesday, July 11, 2018

Circuit Schematic 12VDC to 220V 50Hz at 500W Power Inverter using 2N3055

Eltronicschool. - This is one of the power inverter project for you in this time to show you one of the circuit schematic of 12VDC to 220V 50Hz at 500W Power Inverter using 2N3055.

In this project with circuit schematic of 12VDC to 220V 50Hz at 500W Power Inverter using 2N3055, you will show an how you can build the power inverter using special low cost in this time. 

Circuit Schematic

Component Part
  1. Diodes
  2. Capacitors
  3. Transistor
  4. 2N3055
  5. Detail component see in Figure 1.
Description

Circuit schematic like in Figure 1 above is 12VDC to 220V 50Hz at 500W Power Inverter using 2N3055. The main component in this circuit schematic is transistors and special transistor named 2N3055.

According Eleccircuit site describe that this circuit will accommodate all your needs. It is a simple circuit. The same principle, I take battery voltage 12V to produce a oscillator about 100 Hz and pass to a two frequency divider circuit is only 50HZ. And drive a 10 ampere transformer with 10 x 2N3055 transistor in parallel. By a single transistor has 2A, when I use 10 transistors or 5 pairs of drive high current output. The complexity of circuit, but the principle is not it, and it is the number of transistors on a basic, easy to buy. You may be modified 100 watt power inverter To the size of transistors and transformers as well.

Friday, June 8, 2018

Introduction of Function Generator Working with Block Diagram

Eltronicschool. - Maybe you will not foreign again with the function generator in electronic field now. This device will give you the output signal like sinous, square, and pulse for your project.

In this time we will show you the introduction of the function generator working with the block diagram look like in Figure 1 below.

Blog Diagram of Function Generator

Figure 1. Block Diagram of Function Generator (Source: Circuitstoday.com)

Description

This is the function generator working for you. Accordingly Circuitstoday blog describe that a function generator is a signal source that has the capability of producing different types of waveforms as its output signal. The most common output waveforms are sine-waves, triangular waves, square waves, and sawtooth waves. The frequencies of such waveforms may be adjusted from a fraction of a hertz to several hundred kHz.

The block diagram of a function generator is given in the figure. In this instrument, the frequency is controlled by varying the magnitude of the current that drives the integrator. This instrument provides different types of waveforms (such as sinusoidal, triangular and square waves) as its output signal with a frequency range of 0.01 Hz to 100 kHz.

The frequency controlled voltage regulates two current supply sources. Current supply source 1 supplies a constant current to the integrator whose output voltage rises linearly with time. An increase or decrease in the current increases or reduces the slope of the output voltage and thus controls the frequency.

Friday, May 25, 2018

Tools: Introducing for 4 Band Resistor Calculators

Eltronicschool. - The most popular component in electronic devices is resistor. There are many kinds of resistor provided in this time, one of them is 4 band resistor calculator. 

Image Courtesy of https://www.eeweb.com/


In this season we will show you information about the introducing for 4 band resistor calculators.

Introduction

A resistor is a perhaps the most common building block used in circuits. Resistors come in many shapes and sizes this tool is used to decode information for color banded axial lead resistors.


4 Band Description

The number of bands is important because the decoding changes based upon the number of color bands. There are three common types: 4 band, 5 band, and 6 band resistors. For the 4 band resistor:

Band 1 – First significant digit. 

Band 2 – Second significant digit 

Band 3 – Multiplier 

Band 4 – Tolerance


Resistance Value

The first 4 bands make up the resistance nominal value. The first 2 bands make up the significant digits where: 

black – 0 

brown – 1 

red – 2 

orange – 3 

yellow – 4 

green – 5 

blue – 6 

violet – 7 

grey – 8 

white – 9


The 3rd band or multiplier band is color coded as follows: 

black – x1 

brown – x10 

red – x100 

orange – x1K 

yellow – x10K 

green – x100K 

blue – x1M 

violet – x10M 

grey – x100M 

white – x1G 

gold – .1 

silver – .01


An example of a resistance value is:

band 1 = orange = 3, 

band 2 = yellow = 4, 

band 3 = blue = 1M


value = 34*1M = 34 Mohm


Resistance Tolerance

The fourth band is the tolerance and represents the worst case variation one might expect from the nominal value. The color code for tolerance is as follows: 

brown - 1% 

red - 2% 

orange - 3% 

yellow - 4% 

green - .5% 

blue - .25% 

violet - .1% 

gray - .05% 

gold - 5% 

silver - 10%


An example calculating the range of a resistor value is:



If the nominal value was 34 Ohm and the 4th band of the resistor was gold (5%) the value range would be nominal +/- 5% = 32.3 to 35.7

Source:
https://www.eeweb.com/tools/4-band-resistor-calculator

Circuit Schematic Smart Master/Slave Switch using SMPS Module 5-V/3-W Type (HLK-PM01)

Eltronicschool. - This is one of the power supply project part in this time to show you one of the circuit schematic of Smart Master/Slave Switch using SMPS Module 5-V/3-W Type (HLK-PM01).

In this project with circuit schematic of Smart Master/Slave Switch using SMPS Module 5-V/3-W Type (HLK-PM01), you will show an inexpensive and easy-to-build master/slave switch for integration into powerstrips for the automatic switching of “slaves” upon the status of the “master.” 

Circuit Schematic

Component Part
  1. SMPS Module 5-V/3-W Type (HLK-PM01)
  2. Transformer
  3. Resistors
  4. Transistors
  5. Diode
  6. Capacitors
  7. Relay
  8. LED
Description

Circuit schematic like in Figure 1 above is Smart Master/Slave Switch using SMPS Module 5-V/3-W Type (HLK-PM01). The main component in this circuit schematic is SMPS Module 5-V/3-W Type (HLK-PM01).

How it works

According Electroschematics site describe that the circuit is designed around two key components: a current transformer and a compact SMPS module. The current transformer (CT) is a 5-A/1,000:1 type with a built-in “burden resistor,” and the SMPS module is a 5-V/3-W type (HLK-PM01). The current transformer is specifically designed for monitoring current, and you can wind a few turns of mains-insulated wire through its core to derive a useable output from the secondary. When the current transformer senses plentiful load current from the master unit, an electromagnetic relay (RL1) wakes up to power everything connected to the slave and falls asleep again when the master unit is turned off.

Wednesday, May 16, 2018

Free Download Proteus Professional v8.7 SP3 for Windows with Activation Crack

Eltronicschool. - This is one recent version of Proteus software for electronic design, simulation and PCB layout design for you that called with Proteus Professional v8.7 SP3 for Windows with activation crack in this time.

You also can read: Free Download Proteus 8.6 for Windows


In this time, we will give you global description about Proteus software, and then we will give you link to take free download Proteus Professional v8.7 SP3 for Windows with Activation Crack from external server now.

Description

This is Proteus Professional v8.7 SP3 for Windows with Activation Crack for you who want to create simulation with ISIS and PCB layout design with ARES. This package system of circuit simulation, based on models of electronic components made in PSpice. A distinctive feature of the package Proteus Professional is the possibility of simulating the operation of programmable devices: microcontrollers, microprocessors, DSP and the like. In addition, the package Proteus Professional is a system design of printed circuit boards. Proteus Professional can simulate the operation of the microcontroller follows: 8051, ARM7, Cortex-M3 ARM, AVR, Texas Instruments, Motorola, PIC, Basic Stamp. Component library contains reference data.

Proteus 8 consists of six core modules:

  1. Application Framework. Now Proteus 8 consist of one application with a large number of modules (ISIS, BOM, ARES, 3D Viewer etc.). Modules can be opened in a tab in the application window, you can drag and create additional windows, and saw several tabs at once. It allows you to work not only with ISIS and ARES, as in previous versions, but also with other modules, such as ISIS and VSM Studio for debugging, ISIS and specifications for the report, ARES and 3D Viewer to check out.
  2. General Section Database. Uniform database components provide data exchange between modules in the current project Proteus. The elements of the physical components on a circuit board and at the same time representing the logic elements in the diagram.
  3. Living netlisting. Staying list of connections available to all modules, enabling it to reflect changes in real time. schema changes cause changes in the printed circuit board and, in turn, to change the specification.
  4. 3D Viewer. When watching 3D, besides the OpenGL graphics support DirectX, adding multi-threading to increase rendering speed. Also used netlist life, so that changes made in ARES is displayed in the 3D Viewer.
  5. Bill of Materials. This all-new module works with project documentation. The ability to save the specifications in popular formats PDF, HTML and Excel.
  6. VSM Studio. Integrated Development Environment, which allows to simulate and debug your project in Proteus VSM, and automatically configures the compiler for a particular firmware.

Proteus 8.7 Features

  • Easy to use, yet powerful and flexible
  • Design and simulation of AVR and various types of electrical circuits
  • AVR design and simulation with high accuracy and reliability
  • Complete tool for designing simulations and types of measurement elements
  • It has ISIS library with various microcontroller
  • Possible programming in the software environment
  • Fast design of PCB or printed circuit board without the need for circuit design
  • VSM capability of virtual modeling system
  • Enjoy Advanced Routing Modes
  • Proper and complete program troubleshooting
  • Graphical and 3D display
System Requirement:

  1. Operating System: Windows XP/Vista/7/8/10
  2. Memory (RAM): 3 GB of RAM is required
  3. Hard Disk Space: 600 MB of free space required.
  4. Processor: Intel 2 GHz or faster
How to Install?

  1. Extract the downloaded file, with fill the password: www.akangsuhar.com
  2. Then install the proteus
  3. Install with the option of using license file
  4. User a locally installed license key
  5. Then the labcenter license manager will appear
  6. Click Browse for key file in the lower left corner
  7. Then navigate and select License.lxk that I have provided
  8. Next click the install button
  9. Then there will be notification license detected in the box to the right
  10. Next please close the license form and continue to install
  11. After completion of the installation do not run the program first
  12. Open the crack folder
  13. Copy the BIN and MODELS folders into the installation directory folder
  14. Entered into :
  15. C: \ Program Files (x86) \ Labcenter Electronics \ Proteus 8 Professional
  16. Paste and replace in the Proteus 8 Professional folder
Download 

And now you can click the link below to take free download Proteus Professional v8.7 SP3 for Windows with Activation Crack from external server easily.

Wednesday, April 25, 2018

Circuit Schematic of Upto 40KHz Frequency Counter using Arduino UNO

Eltronicschool. - Do you want to build by your self using Arduino UNO and also LCD screen in this time, Frequency counter? If you want do it, maybe you can design it using the circuit schematic look like shown in Figure 1 below.

Using this circuit schematic, frequency counter will count upto 40KHz and displayed in LCD screen 16 x 2. Maybe the circuit schematic of Upto 400KHz frequency counter is very simple and easy to build.

Circuit Schematic

Figure 1. Circuit schematic of upto 40KHz frequency counter using Arduino UNO and LCD screen 16x2 (Source: Circuitstoday.com)

Component Part
  1. Arduino UNO
  2. Resistor
  3. LCD screen 16x2
  4. Variable resistor
Description

Circuit schematic like in Figure 1 above is upto 40KHz frequency counter using Arduino UNO. Using this circuit schematic completed with source code, will allow you to enjoy frequency counter displayed in LCD screen 16x2. Using this circuit we can minimize the external component to count the frequency.

How it works

According Circuitstoday site describe the frequency to be counted is connected to digital pin 12 of the arduino. pulseIn() function is used here for counting the frequency connected to pin 12. pulseIn() function counts the number of pulses (HIGH or LOW) coming to a particular pin of the arduino. The general syntax of this function is pulseIn(pin, value, time) where pin is the name of the pin, value is either HIGH or LOW and time is time for which the function to wait for a pulse. The function returns zero if there is no valid pulse with in the specified time. The pulseIn() function can count pulses with time period ranging from 10 μS to 3 minutes. For more about cource code here.