Arduino clock can be implemented by using LCD Shield Board for Arduino. This shield can simplify the prototyping process of many Arduino based circuits. It incorporates a 16×2 display and a basic 6 buttons keypad thus removing the need for additional wires and connections. All buttons are connected to A0 analog input through a resistor … 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
Arduino based LCD Bargraph Voltmeter can be easily assembled with Arduino Mega 2560/Arduino Uno or compatible boards. Arduino LED battery level indicator is here. Similar design based on Raspberry Pi platform is available at this link. This design is basically the same circuit I’ve shown in Bargraph Voltmeter except for 2 main differences. Current design … Read more
In this post I’ll show you how to build a RFID reader for security access based on Arduino MEGA board. The code I’ve used is a modified version of a design that was published at Arduino project hub. I added 2×16 LCD display to show card ID and MOSFET driver for controlling an electric strike … Read more
In this post I’m going to show you how to use a Serial I2C Interface Module to control 2×16 LCD display with Arduino. For similar design using PIC16F876 click this link. Instead of using 8 or 4 bit parallel connection from Arduino board to LCD only 2 pins are required. One for sending the Data … Read more