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
8×8 LED Matrix chaser based on Arduino MEGA compatible board will be presented in this post. It uses a LED dot matrix display module with two 74HC595 shift register chips connected in serial to control the LED output. Similar design based on MAX7219 LED driver can be found here. For this project only 3 additional … Read more
In this article I’m going to show you how an 8×8 LED Dot Matrix Display can be driven by MAX7219 with Arduino.There are 2 similar designs. PIC16F876 version is available at this link ,for circuit based on 74HC595 click here.For this project I’ve created my own function to send data to MAX7219.This function is called SendDataDotMatrix(). It … Read more
In this post I’ll show you how to build a simple Binary to Hexadecimal converter using common cathode 7-Segment display and Arduino Mega compatible Iduino Mega R3 board. Similar devices should also work ,however I did not test it. The circuit has 4 binary inputs (Input Bit 0 – 3) and 7 outputs, one I/O … Read more
Recently I’ve published a basic Binary to Hexadecimal converter design based on Atmega 2560 chip. The same set up can be used for building a simple UP/Down counter with Arduino Mega compatible board. 7-Segment display and its I/O stayed the same but now only 1 input (Pin 9) is used to select the counter direction.”0”- UP,”1” … Read more