FRIENDz

FAILURE IS THE SIGN OF SUCCESS!!

Controlling a Digital Potentiometer Using SPI


In this tutorial you will learn how to control the AD5206 digital potentiometer using Serial Peripheral Interface (SPI). Digital potentiometers are useful when you need to vary the resistance in a circuit electronically rather than by hand. Example applications include LED dimming, audio signal conditioning and tone generation.

Analog In, Out Serial using Arduino -c


Analog In, Out Serial

This example shows how to read an analog input pin, map the result to a range from 0 to 255, and then use that result to set the pulsewidth modulation (PWM) of an output pin to dim or brighten an LED.

AD5171 Digital Potentiometer


This example shows how to control a Analog Devices AD5171 Digital Potentiometer which communicates via the I2C synchronous serial protocol. Using Arduino's I2C Wire Library, the digital pot will step through 64 levels of resistance, fading an LED.

Servomotor-based mobile robot control


Project description:
 Mobile robots are used in many industrial, commercial, research, and hobby applications. This project is about the control of a mobile robot using servomotors. The robot used in this project is the base of a popular mobile robot known as Boe Bot, developed by Parallax (www.parallax.com and www.stampinclass.com). The basic robot is controlled from a Basic Stamp controller (Trademark of Parallax Inc.). The robot base and electronic circuit have been modified by the author so that the robot can be used with PIC microcontrollers

Right-left scrolling LEDs


Project description:
 In this project, 8 LEDs are connected to PORT B of a PIC microcontroller. Also a push-button switch is connected to bit 0 of PORT A using a pull-up resistor.. When the switch is pressed the LEDs scroll to the right.

VLSI Video Lecture