Rocketdock
Rocketdock is a software which creates a shortcut menu on top of the desktop, like in the below image,
Download Rocketdoc...
Sunday, 16 February 2014
Monday, 3 February 2014
Sunday, 19 January 2014
Simple Fire Alarm Circuit
Simple Fire Alarm Circuit
Here is a simple fire alarm circuit based on a LDR and lamp pair for sensing the fire.The alarm works by sensing the smoke produced during fire.The circuit produces an audible alarm when the fire breaks out with smoke.
When there is no smoke the light from the bulb will be directly falling on the LDR.The LDR resistance will be low and so the voltage across it (below .6V).The transistor will be OFF and nothing happens.When...
Digital Sound Recorder with AVR and DataFlash
Digital Sound Recorder with AVR and DataFlash
Features
• Digital Voice Recorder
• 8-bit Sound Recording
• 8 kHz Sampling Rate
• Sound Frequency up to 4000 Hz
• Maximum Recording Time 4 1/4 Minutes
• Very Small Board Size
• Less than 700 Bytes of Code
Introduction
This application note describes how to record, store and play back sound using any AVR microcontroller with A/D converter, the AT45DB161B DataFlash memory and a few extra components.
This application note shows in detail the usage of the A/D Converter for sound recording,...
Design of a Voice Recorder using ADC Microcontroller
Design of a Voice Recorder using ADC Microcontroller
The C8051F411 offers a versatile, small (5 x 5 mm), highly integrated, low-power solution for voice applications. The 12-bit ADC and DAC allow for reasonable quality sound at a 8 kHz sampling rate, and the Hardware Accumulation and Burst Mode features of the ADC provide for further improvements with small processing tradeoffs. The Suspend mode operating feature allows the voice recorder to “sleep” while idle, saving power in a similar fashion to the traditional 8051 Stop mode, but...
Wireless Electrical Appliances Control System Using IR Communication
Wireless Electrical Appliances Control System Using IR Communication
Domain : Embedded Systems, Power Electronics,
Software : C, Keil, Proload
Power Supply : +5V, 500mA Regulated Power Supply
Display : 7-Segment
LCD : HD44780 16-character, 2-line (16X2)
Input : IR signal from Remote control (RC5)
Crystal : 11.0592MHz
Switching Loads : 6
Applications : Industries, Offices, Hotels. Banks, Hospitals
Controlling electrical appliances through...
Digital Visitor Counter
Digital Visitor Counter
Digital visitor counter is a reliable circuit that takes over the task of counting Number of Persons/ Visitors in the Room very Accurately.
When somebody enters into the Room then the Counter is Incremented by one and when any one leaves the room then the Counter is Decremented by One. The total number of Persons inside the Room is displayed on the seven segment displays.
The microcontroller does the above job by receiving the signals from the sensors, and this signal is operated under the control of software which...
Computer Controlled Automated Small Vehicle
Computer Controlled Automated Small Vehicle
This paper represents a computer controlled small vehicle. This kind of vehicle can move in a predefined path without human operator intervention and can collect data from the surrounding environment. This data has been processed by a well structured hardware and software. After processing the received data is sent to the vehicle to move it in its correct path. This type of vehicle can be used in variety of application such as military spying, fire fighting system etc.
Introduction
A 6 volt...
Subscribe to:
Posts (Atom)
.jpg)
