Remote control


+ Reply to Thread
Results 1 to 3 of 3

Thread: Remote control

  1. #1
    Radiance's Avatar
    Radiance Guest

    Default Remote control

    Does anyone have any experience with PICS and remote control projects? I'm trying to decide the best way to add a remote volume control to an amplifier, and need a VERY minimal implementation of a remote to send an up and down signal to a digital volume control (a dallas ds1802). RF or infrared will both do, with IR being the preferable (but more difficult probably) choice.

    Nik

  2. #2
    Join Date
    Jul 2003
    Location
    Sweden
    Posts
    237

    Smile

    Hi Nik,

    I've done a couple of infrared remotecontrols, both transmitter and reciever. It's not too difficult.

    /Ingvar

  3. #3
    Join Date
    Jul 2003
    Posts
    2,358

    Default

    IR is a pretty wide subject, although it’s probably the easiest to play with as you’ve probably got all the bits lying around your home already.

    The first thing to do is to determine what IR transmitter (handset) you’re going to use. Press the + or - VOL button, and see what you get. Unless you're going to build your own IR handset transmitter, this is really the starting point.

    I’ve appended a jpeg of the signal from a typical TV remote with the – VOL button pressed so you can see what you're going to deal with. You get a repeating burst of pulses across a set time period - in this case 25mS - which unfortunately is quite different for each manufacturer and function.

    There are lots of ways of decoding IR… quite simply you just have to read-in the pulses and determine if they’re long or short… Have a look at microchips application note AN657 for some clues.

    http://www.microchip.com/download/ap...6c5x/00657.pdf

    Melanie
    Attached Images Attached Images  

Similar Threads

  1. My code for TV remote and MIBAM for RGB control
    By idtat in forum Code Examples
    Replies: 4
    Last Post: - 12th January 2013, 20:52
  2. DTMF and PIC for Remote Control
    By doggitz in forum mel PIC BASIC Pro
    Replies: 19
    Last Post: - 30th March 2010, 11:42
  3. Newbie remote control question?
    By Clodoaldo in forum mel PIC BASIC Pro
    Replies: 4
    Last Post: - 14th July 2009, 17:20
  4. IR Remote Control Issues
    By Kamikaze47 in forum mel PIC BASIC Pro
    Replies: 20
    Last Post: - 28th August 2007, 14:12
  5. No one-way approach to learning ir remote control frequencies
    By selbstdual in forum mel PIC BASIC Pro
    Replies: 41
    Last Post: - 22nd June 2007, 13:26

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts