This Speaking Calculator project is an interesting device built just by three chips that can be very useful to blind people. The system has four basic operations (addition, subtraction, multiplication and division), and the functions: clear all, change of sign (+/-), inverse (1/x), square root (v), pi number (p), add with memory (M+) and read […]
Speaking Calculator using AVR ATmega88 microcontroller Read More »
The Lord of the Keys is password managing system that able to store many usernames and passwords inside a Java Card™ smart card (one of the most secure methods to store confidential information). Whenever a dialog box appears in an application or web browser requesting a username and password. These security features can be found
Handy Password Managing System, Lord of the Keys using AVR ATmega168 Read More »
Mini Logic analyzer is ATmega8-based electronics tool that can be used to watch and analyze logic transitions 0 or 1 of a digital data signal. It comes with Nokia 3310/5110 LCD to display signal and it has 4 channel inputs. A digital data signal can be found on the output pin of TSOP-1730 Infrared Receiver,
Mini Logic Analyzer using ATmega8 microcontroller Read More »
AvrPhone is ATmega128A-based simple mobile phone with touch screen and SIM100S GSM module. The display uses 2,4″ LCD with a resistive touch screen and ILI9325B driver (16 bit parallel bus). The LCD breakout board contains SD card slot and XPT2046 touchscreen controller. They both are connected to AVR’s SPI bus. The project is powered by
AVR Based Mobile Phone using AVR ATmega128A microcontroller Read More »
This ATmega644-based project implements a touchpad input system which takes user handwriting input and converts it to a printed character. Currently, the device only recognizes the 26 letters of the alphabet, but it could be easily generalized to include any figure of completely arbitrary shape, including alphanumeric, punctuation, and other symbols using available training system.
AVR Touchpad Handwriting Recognition using ATmega644 microcontroller Read More »
This portable security system is built based on Atmega644 microcontroller. It can detect intruders based on their physical presence. The system uses URM37v3.2 ultrasonic sensor which is connected to MCU through rs232 serial communication. To rotate sensor for wide coverage range, the system is equipped with Parallax servomotor. For user interface, there are LCD and
Ultrasonic Security System using Atmega644 microcontroller Read More »
This low cost AVR-based Sous-Vide Cooker is able to auto-calculate the appropriate time for cooking a certain thickness of meat using heat transfer equations. It can maintain a set temperature for extended periods of time. The project implements advanced features such as a water level monitor and automatic timer that can set cooking times depending
Auto Sensing Sous-Vide Cooker using AVR microcontroller Read More »
The benefit using thermocouple sensor for measure temperature is it has wide range measurement (-200 °C to +1350 °C / -328 °F to +2462 °F range for Type K), inexpensive, interchangeable, and is supplied with standard connectors. To get temperature value from output of a thermocouple, you need high precision amplifier and proper compensation circuit
AVR Thermocouple Temperature Meter using ATmega164 microcontroller Read More »
A GLCD connected to an AVR microcontroller The PVG120602EGE is a 128×64 pixel graphic (grey) LCD with lightblue EL backlight and two KS0108 controller chips and one KS0107 line (colums) driver (64 display lines COM1 – COM64) The first KS0108 drives segments 1 to 64 (Y1 – Y64), the second drives segments 65 to 128
A GLCD connected to an AVR microcontroller using ATmega8 microcontroller Read More »
Pinning LCD display 1601A: Pin no. Symbol Function 1 Vss GND 2 Vdd + 5V 3 Vo Contrast Adjustment 4 RS H/L Register select signal 5 RW H/L Read/write signal 6 E H->L Enable signal 7 DB0 H/L Data bus line 8 DB1 H/L Data bus line 9 DB2 H/L Data bus line 10 DB3
Pinning LCD display 1601 using microcontroller Read More »
