LCD Digital Alarm Clock Arduino
Digital Alarm Clock based on Arduino MEGA board and 2x16 LCD display is the topic of this post. Similar design based on Raspberry Pi can be found at this link. For PIC16F877 version click here. This design should also work ...
Response Time Meter
If you ever thought how fast you can react to external stimulus here is the circuit that can measure your response time. It measures the time it takes for you to press the push button in response to turning the ...
LED Battery Level Indicator Arduino
LED Battery Level Indicator can be built using Arduino UNO board and 10 LEDs. Similar design that uses 2x16 LCD display can be found at this link. RGB LED variant is here. For Raspberry Pi version click here. I/O lines ...
Interfacing MCP4725 DAC with Arduino
In this post I’ll show you how a 12 bit DAC model MCP4725 can be connected and controlled by Arduino or a compatible board. Similar design based on Raspberry Pi platform can be found at this link . Wire.h and ...
Arduino Thermometer LM35
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 ...
7×5 Dot Matrix Character Generator
In this post a basic character generator design based on PIC16F88 will be demonstrated. 7x5 Dot Matrix Display was used and its pin out is shown in the schematic below. Instead of using PIC16F876/7 microcontrollers PIC16F88 was chosen for this purpose ...
Arduino with 74HC595 and 7-Segment
74HC595 is a discrete shift register IC that can be easily integrated with Arduino platform. Usually shift registers are used to convert a serial data to a parallel output. Additional shift registers can be connected in series extending the number ...
Arduino Base Converter with 4×4 Keypad and I2C LCD
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 ...
BCD to 7 Segment Display Decoder
In this post I'll show how you can drive 7 Segment LED display with PIC16F876A. Instead of using a dedicated IC’s like 4511 we’ll program the micro controller to convert BCD input code 0 – 9 to a 7 Segment LED ...
Arduino 3 Digit Timer with LED Display
Arduino based 3 Digit Timer with LED Display module is a relatively simple design. Recently I’ve published a number of similar projects that essentially perform the same task. You set up an initial value via some kind of user interface ...
