Showing posts with label speed. Show all posts
Showing posts with label speed. Show all posts
Wednesday, November 9, 2016
PC BASED DC MOTOR SPEED AND DIRECTION CONTROL USING PWM AND BRIDGE
PC BASED DC MOTOR SPEED AND DIRECTION CONTROL USING PWM AND BRIDGE
ABSTRACT:
A pulse width modulator (PWM) is a device that may be used as an efficient DC motor speed controller or light dimmer. This project is a versatile device that can control DC devices which draw up to a few amps of current. The circuit may be used in either 12 or 24 Volt systems with only a few minor wiring changes. This device has been used to control the speed of the DC motor and to control brightness of an automotive tail lamp.
A PWM circuit works by making a square wave with a variable on-to-off ratio, the average on time may be varied from 0 to 100 percent. In this manner, a variable amount of power is transferred to the load.
The main advantage of a PWM circuit over a resistive power controller is the efficiency, at a 50% level, the PWM will use about 50% of full power, almost all of which is transferred to the load, a resistive controller at 50% load power would consume about 71% of full power, 50% of the power goes to the load and the other 21% is wasted heating the series resistor.
One additional advantage of pulse width modulation is that the pulses reach the full supply voltage and will produce more torque in a motor by being able to overcome the internal motor resistances more easily. Two push-to-on switches are provided for increasing / decreasing the speed of the motor.
Two more push-to-on switches are provided to rotate the motor in Clock wise / Counter clock wise direction. 16X2 LCD is connected to display the speed level of the motor and the direction. LED indication is also provided for visual indication.
A buzzer is provided for audio indication of DC motor speed variation and change in direction. Whenever the speed is increased / decreased, the system acknowledges by a short beep. This buzzer is driven by transistor driver circuit.
This project uses regulated 5V, 750mA & 12V, 500mA power supply. 7805 and 7812 three terminal voltage regulators are used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac out put of secondary of 230/12V step down transformer.
If you want to buy this project, drop email on technofieldsystems@gmail.com
Available link for download
Tuesday, November 8, 2016
Speed Up Any PC Smartphone or Tablet By Disabling Animations
Speed Up Any PC Smartphone or Tablet By Disabling Animations
Activitys on a desktop PC, cell phone, or tablet are decent — the initial few times. In the long run, you simply wish they would hustle just a bit and quit squandering your time.
Crippling (or simply decreasing) movements can accelerate any interface. Indeed, the activitys are really quick as of now, yet sitting tight for them again and again every day can begin to feel senseless.
Windows
The Windows desktop has since quite a while ago offered helpful choices for debilitating activitys. These settings work over each adaptation of Windows, from Windows XP to Windows 7 as far as possible up to Windows 8 and the Windows 10 Technical Preview.
To get to the activity choices, open the Control Panel, click System and Security, and click System. Click the "Propelled framework settings" choice in the sidebar. Click Settings under Performance and utilize the checkboxes here to control which livelinesss Windows shows. Picking "Alter for best execution" is a fast approach to debilitate every one of them.
On an advanced Windows framework, these livelinesss wont generally hurt your execution much — however they will make the framework appear to be quicker as menus snap into perspective and windows minimize and restore in a split second. These alternatives permit you to wipe out Windows 8s Start screen movements, as well.
Android
Androids shrouded Developer Options menu permits you to drastically quicken the activitys or debilitate them totally. Weve secured this some time recently, and the procedure is essentially the same on both Android 4.x and Android 5.0.
In the first place, youll have to empower the Developer Options menu. Open the Settings application, look down to the base, and tap About telephone or About tablet. Find the "Construct number" field and tap it seven times. Youll see a warning saying youre presently a designer.
Tap the back catch and tap the Developer choices thing that is presently showed up close to the base of the Settings menu. Actuate the Developer alternatives slider, look down, and change the "Window liveliness scale," "Move activity scale," and "Illustrator span scale" choices. You can choose "Activity off" to handicap them or "Liveliness scale .5x" to make them twice as quick as expected.
iPhone and iPad
Apple handled a great deal of client objections for the pace of livelinesss in iOS 7. Theyve sped them up from that point forward, yet theres still an approach to diminish the interfaces activitys.
To do as such, open the Settings application, tap General, and tap Accessibility. Tap the Reduce Motion alternative and actuate the switch. This wont dispense with the livelinesss altogether, yet it replaces the movement activitys with a blur that feels cleaner — and perhaps quicker.
Macintosh OS X
The slowest activitys on a Mac are the window minimize and restore livelinesss. They can be controlled from the Docks inclinations sheet. To get to it, tap the Apple menu, select System Preferences, and click Dock.
Theres no choice to cripple this liveliness totally, yet you can pick the "Scale" activity rather than the default "Genie" movement. Scale feels a touch speedier and less diverting than Genie, so youll have a quicker ordeal whenever you minimize and restore an application.
Tragically, there arent yet numerous different choices for handicapping activitys as of OS X Yosemite. There is a possibility for handicapping the ricochet movement when applications dispatch in the Dock sheet, however. Ideally Apple will include more choices for controlling the different movements.
Linux
Your Linux desktop environment likely has its own particular alternatives for controlling its different desktop movements, as well. Youll for the most part discover choices for controlling movements that show up when windows open, close, minimize, or are restored.
On Ubuntus default Unity desktop, these choices are a touch hard to get to. Youll need to introduce the CompizConfig Settings Manager and use it to change the shrouded graphical settings shouldnt adjust. From here, you can accelerate or wipe out these activitys by debilitating them or changing their term. Be cautious while utilizing this instrument, as its somewhat convoluted and isnt expected for regular desktop clients!
For all intents and purposes each graphical interface offers some choice to lessen livelinesss. Some working frameworks offer more finish alternatives than others — the Windows desktop and Android are especially configurable — however every working framework offers some. Over each graphical interface, wiping out, diminishing, or simply accelerating movements will make your interface feel speedier. This is another tip that will presumably serve you well on whatever interface youre utilizing a long time from now.
At the point when Microsoft included new, to a great degree moderate movements to the Windows 10 Technical Preview, a few individuals approached Microsoft for a choice to incapacitate them. Others just went straight to the Performance settings dialog in Windows and handicapped them all alone utilizing standard choices that have existed in Windows for
Available link for download
Sunday, November 6, 2016
SMS BASED PWM SPEED AND DIRECTION CONTROL OF DC MOTOR USING H BRIDGE AND GSM
SMS BASED PWM SPEED AND DIRECTION CONTROL OF DC MOTOR USING H BRIDGE AND GSM
ABSTRACT:
Nowadays there are various electronic equipments available for remote operation of electronic devices. But, the main disadvantage of these systems is that they can be operated only in short ranges and also less reliable. Thus, to overcome the above drawbacks, we are using one of the wireless communication technique i.e., GSM.
GSM(Global Systems for Mobile Communication) is vastly used because of its simplicity in both transmitter and receiver design, can operate at 900 or 1800MHZ band, faster, more reliable and globally network. Here the system is capable of controlling the motor by receiving control messages from an authorized mobile number. Microcontroller is the heart of our system, which controls the overall operation of our system. System always alert for receiving SMS from valid number then that particular messages are displayed on our LCD(Liquid Crystal Display) i.e., whether the motor should rotate in right shift or left shift with a speed of so and so.
We are using H-Bridge as an driver for our DC Motor because our Microcontroller cannot provide the maximum current to drive a DC Motor. GSM network operators have roaming facilities, user can often continue to use there mobile phones when they travel to other countries etc. In contrast, a microcontroller not only accepts the data as inputs but also manipulates it, interfaces the data with various devices, controls the data and thus finally gives the result.
This project uses regulated 5V, 500mA power supply. 7805 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac out put of secondary of 230/12V step down transformer.
BLOCK DIAGRAM:
If you want to buy this project, drop email on technofieldsystems@gmail.com
Available link for download
Monday, October 3, 2016
WIND SPEED MEASUREMENT AND ALERT SYSTEM FOR TUNNEL FIRE SAFETY
WIND SPEED MEASUREMENT AND ALERT SYSTEM FOR TUNNEL FIRE SAFETY
ABSTRACT:
This application describes a system for wind speed measurement and alert.This application is implemented with the help of two sections one is transmitter section which is responsible for monitoring the environment temperature using temperature sensor and depending upon the variation in temperature the speed of the wind changes automatically and whatever the temperature is changed in the transmitter section is displayed on the 16x2 LCD and parallely is is transmitted to the receiver section and displayed on the PC using Zigbee communication.In the transmitter section the temperature sensor is connected to the LPC2148 controller and this controller is responsible for manipulating the entire application.
The LPC2148 are based on a 16/32 bit ARM7TDMI-S™ CPU with real-time emulation and embedded trace support, together with 128/512 kilobytes of embedded high speed flash memory. A 128-bit wide memory interface and unique accelerator architecture enable 32-bit code execution at maximum clock rate. For critical code size applications, the alternative 16-bit Thumb Mode reduces code by more than 30% with minimal performance penalty. With their compact 64 pin package, low power consumption, various 32-bit timers, 4- channel 10-bit ADC, USB PORT,PWM channels and 46 GPIO lines with up to 9 external interrupt pins these microcontrollers are particularly suitable for industrial control, medical systems, access control and point-of-sale. With a wide range of serial communications interfaces, they are also very well suited for communication gateways, protocol converters and embedded soft modems as well as many other general-purpose applications.
This project uses two power supplies, one is regulated 5V for modules and other one is 3.3V for LPC2148. 7805 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac out put of secondary of 230/12V step down transformer.
For Block diagram and other queries drop comment .
Available link for download
Tuesday, August 30, 2016
Top Speed Drag Fast Racing for BlackBerry Games
Top Speed Drag Fast Racing for BlackBerry Games
Dominate your criminally insane rivals in extreme head-to-head drag races. Reach impossible speeds by expertly timing gear changes and bursts of nitro. Drive 69 cars, beat 20 criminal overlords and become the biggest fish in the city. - Pick from 69 cars: stock rides, dragsters and police vehicles - Let your creativity flow through a ton of tuning and customization options - Drive in 5 city districts, each with its own unique theme and gang crew - A real-life inspired aircraft carrier to race on - Epic arcade game modes - Adrenaline inducing Most Wanted police chases - Mind blowing 3D HD visuals Top Speed is setting the new standard within drag racing genre. Have you ever wanted to participate in underground races against unpredictable mafia mobs? Drive top class luxury cars and show everybody whos the boss? Jump right behind the wheel and get ready to have your breath taken away the moment you push that nitro button. In Top Speed you can tune and mod your ride to your liking. Increase the engines power, upgrade your gear box and nitro, repaint your car, slap on some decals if you need to. All of it will have a definite impact on the realistic driving simulation. When you unlock elite dragsters you can also reach for the most hardcore visual mods from the black market. All of the goods from the criminal nation are for your disposal - you just make sure to make good use of them. Choose any car you want from an astounding selection of 69 rides - you can drive classic stock cars, new heavily modded dragsters and even national police vehicles from 5 different countries. Your skills will be tested, so get ready for the most intense drag racing game of 2015! Download for free now.
Screenshots
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