4-Digit LED Dot Matrix Clock Arduino
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 ...
DC Motor Controller
This post is about building a simple PIC16F88 based DC motor controller. Motor speed and direction can be controlled by two push buttons SW1, SW2. One for motor speed and the other for polarity. This post follows recently published projects like PWM ...
8×8 LED Matrix chaser Arduino
8x8 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 ...
Arduino PWM Fan Controller
This implementation of Arduino based PWM Fan Controller is simple circuit that allows controlling fan speed by varying the duty cycle of the output signal. For PIC16F684 version click here. I’ve tested with Deepcool 120mm fan and it works OK, ...
Binary to Hex 7-Segment Arduino
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 ...
PIC C Programming
In this article I’ll show you how to program Microchip PIC microcontrollers using HI-TECH PICC compiler and basic PIC development board. The board consists of PIC16F876A, LED bar graph and 20MHz oscillator. PICKIT3 compatible programmer was used to download the ...
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 ...
3 Digit Up Down Counter PIC16F877A
3 Digit Up Down Counter shown here is based on PIC16F877A microcontroller. The count is shown on the 2x16 LCD display and the direction is controlled by a switch connected to bit 3 of PORTA. With minimal changes the attached ...
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 ...
Interfacing MAX7219 with PIC16F876 microcontroller
MAX7219 is a common cathode display driver with a simple serial interfaces that can be easily connected to a microcontroller. Among other useful features this IC has built in brightness control and scan control capability that allows to limit the ...
