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
Here is another digital clock design based on Arduino platform. This time it uses 4-Digit LED Dot Matrix module to show the time. Similar design with LCD display is available here. The Dot Matrix module consists of four MAX7219 chips connected in serial and 8×8 Dot Matrix Displays. I’ve used Arduino LedControl.h library to communicate … Read more
Arduino hexadecimal to binary Base Converter is a simple design that can be built using 4×4 Keypad and I2C LCD display module. Arduino MEGA board was chosen as a target device. This circuit will wait for a single digit to be entered and then convert it to a binary representation outputting 8 bit to the … Read more
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
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