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Up Down Counter design based on Arduino MEGA compatible board is the topic of this article.it uses 2×16 LCD display to show the counter values and 4×3 keypad to input initial 3 digit number.The counter will count Up/Down according to a chosen direction * – Up,# – Down. Nevertheless the count will stop at “000”. … Read more
3 Digit Up Down Counter shown here is based on PIC16F877A microcontroller. The count is shown on the 2×16 LCD display and the direction is controlled by a switch connected to bit 3 of PORTA. With minimal changes the attached assembly code can be modified to run on similar MCUs from PIC16F family. Analogous design … Read more
Arduino Ohm Meter is one of the simplest circuits that can be built with minimal number of required components. As can be seen from design schematic a standard 2×16 LCD display and 3 resistors are all you need to complete this project. The value of unknown resistor marked with ? will be shown on the … Read more
In this post I’ll show you how to interface a RTC module DS3231 Real Time Clock with Arduino. This particular module uses I2C protocol to transfer current time to a micro controller. DS3231 library and header files should be installed on your computer and included in the code, otherwise you won’t be able to compile … Read more
LM35 is a temperature sensor that outputs a voltage proportional to the surrounding temperature in centigrade. In this post I’ll show how this device can be connected to Arduino MEGA board to build a thermometer that shows the current temperature on the LCD display. For similar design based on LM75A sensor click here. Also version … Read more