Digital Volt meter with seven segment display

Previous I post about Digital Volt meter with LCD display. This project I modification become Digital Volt meter with seven segment display. For more information about this project you can check at Digital Volt meter with LCD display.

Digital Volt meter with LCD display

This project is the digital Volt meter with LCD display. The range capability 0 to 30Vdc.

Specification:
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Upper range = 30Vdc
lower range = 0Vdc
ADC = 10 bit (Feature ATMEGA 8535)

Digital combination key using keypad 4x4

This project is digital combination key using 4x4 keypad with 4 digits of password. The password stored in eeprom memory.
To check the configuration of keypad please check at How to Input Data Mikrocontroller Using Keypad

How to Input Data Mikrokontroler Using Keypad

There are several ways to input the data on the microcontroller one of them is KEYPAD. There are many types of keypads one example discussed here uses a 4x4 matrix keypad.

Digital Clock with Alarm Function

This design is to answer the questions from visitors of this blog about Digital Clock with Alarm Function.

Communication 2 microcontroller using I2C.

This time I tried to connect two microcontrollers with I2C communication.
I2C is a serial protocol and synchronous bus. In standard applications and the hardware and the time is same.

Configuring the I2C communication