Sunday, September 8, 2013

NEC Protocol IR (Infrared) Remote Control With a Microcontroller


        This little project will demonstrate how you can build NEC protocol based Infrared Remote Control to use with 
various NEC Protocol IR receivers.

        actually there are lots of projects out there to accomplish this task but i have to write my own code because of too many requests on this IR(infrared) Remote Control Relay Board with PIC 12F675 Microcontroller   people keep asking "Where is the Transmitter for this" although you can use any NEC protocol based remote ,but i just wanted to build one by my self. so here it is.

Monday, September 2, 2013

Rotary Encoder Interfacing With MSP430 LaunchPad

       This a a follow up to the Roatary Encoder with PIC micro in this demo we will use Texas Instrument MSP430G2211 with MSP430 LaunchPad 

Incremental Rotary Encoder
first of all i would like to tell you , these type of rotary encoder is totally digital component so you can't directly replace these  with you conventional pots. so lets start what are Incremental Rotary Encoder , Incremental rotary encoders by the looks of it just like a general purpose pot looks like but output is quite different they  provide a pair of digital signals that allow a microcontroller to determine the direction of a shaft’s rotation. They can be used to monitor motors and mechanisms, or to provide a control-knob user interface.

   for a quick look here is a typical incremental rotary encoder