Back in the old days the COM port or known as RS-232 (EIA-232 standard) is one of the essential communications protocol and hardware use in many computer system installation start from small UNIX machine to the mainframe. The RS-232 protocol is used by terminal such as wyse60 or DEC vt100 which connected through direct cable or modem to the UNIX host or legacy system. Actually you could still tracked this h ...Read more ›
An advanced energy saver project with DTMF capabilities to use electricity efficiently by reducing the unwanted uses.
INTRODUCTION: A lot of electricity is wasted due to ignorance or fault of the user. Sometimes a person in the room turns on all the electric equipments which is of no use to them. As an example, supposedly a person enters in the hall or conference hall (where a large number of tube lights or fans are available). In the default scenario, all the equipments would be turned on which is just wastage of elect ...Read more ›
How a generic keyboard is made has been already explained in the Atmega 32u4 Based Generic USB Keyboard Project. In this project a wireless keyboard will be designed. For making a wireless keyboard, there will be two circuits involved in the project - a transmitter circuit which will have a keypad included for getting the user input and a receiver circuit that will connect with the PC through USB port. The ...Read more ›
How a generic mouse is made was explained in the Atmega 32u4 Based Generic USB Mouse Project. In this project a wireless mouse will be designed. For making a wireless mouse, there will be two circuits involved in the project - a transmitter circuit which will have a keypad included for getting the user input and a receiver circuit that will connect with the PC through USB port. The two circuits will connect ...Read more ›
A speaker is a device that produces sounds from the electrical signal having audio encoded. The speakers usually have a 3.5 mm jack for audio output from the computer. Nowadays USB interface is also gaining popularity for interfacing audio devices with the computer. A lot of portable audio and musical devices nowadays have USB connector for interfacing with the computers. The USB pluggable portable devices ...Read more ›
The music keyboard is one of the most common musical instruments. The electronic musical keyboards have been around for a long time. The electronic music keyboards synthesize musical sounds electronically according to MIDI (Musical Instrument Digital Interface) standards. Fortunately, the USB protocol does have provision to implement the MIDI standard under Audio Class Devices. The USB protocol has the MIDI ...Read more ›
External memories are frequently used to store and carry computer data. The USB flash drives are quite common nowadays. This project is an attempt to demonstrate making of USB storage devices. The project converts an external EEPROM which basically has I2C interface to an USB device. The project actually works like a protocol changer between I2C and USB standards. The external EEPROM used in the project is ...Read more ›