Sine Wave with MCP4725 and Rasperry Pi
Generating Sine wave is a relatively simple task. It can be done by adding MCP4725 12bit DAC to Raspberry Pi. For Arduino version based on PCF8591 IC click this link. This setup is based on I2C interface and works by ...
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 ...
PIC16F877A Digital Clock
This is PIC16F877A microcontroller based digital clock with 7-Segment display. For this project LTC3710HR was used, however the schematic can be easily adjusted to incorporate larger displays.LTC3710HR is 0.3 inch quadruple digit multiplex common cathode display.Main consideration for choosing the display ...
Digital Alarm Clock
Digital Alarm Clock design based on PIC16F876A will be demonstrated in this post. Various modules from earlier project were implemented in current design hardware and source code. For example it uses the same 7-Segment Display and multiplexing routing as in ...
Arduino 7-Segment LED Display MAX7219
MAX7219 is a serial input/output common-cathode display driver. It can interface the microcontroller to 7-segment numeric LED displays, bar-graph displays, dot matrix display or individual LEDs. This IC has some very useful features like built in decoder, multiplex scan circuitry, ...
Stepper Motor Controller with Arduino
Basic Stepper Motor Controller can be built with Arduino board and a few additional components like MOSFET switches and a potentiometer to control unipolar stepper motor speed and direction. The principle of operation is relatively simple. When a potentiometer is ...
Using Ultrasonic Sensor HC-SR04 with PIC16F877
This post is about building a basic distance meter with ultrasonic HC-SR04 sensor and PIC micro controller. For Arduino version click here. Raspberry Pi variant is also available at this link The interface is very simple and does not require too many commands ...
Interfacing VFD with PIC Microcontroller
Vacuum fluorescent display can be a good alternative to a Liquid-crystal displays in some applications. They have a number of advantages over LCD like extended temperature range and excellent contrast in high brightness environment. The main disadvantage is higher power consumption ...
LED Aquarium Lighting
Recently I was asked to build an aquarium lighting controller prototype to provide variable brightness during its operation and ability to program ON/OFF times. 25 blue and white diffused 10mm LED were used to illuminate the aquarium. The main requirement from ...
8×8 LED Dot Matrix Display with Arduino
In this article I’m going to show you how an 8x8 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 ...
