Actions
Forum Thread Details
  • Replies 2 replies
  • Subscribers 391 subscribers
  • Views 296 views
  • Users 0 members are here
Related

How to increase the range

rishi2628

I want to make a simple ir remote using arduino that could work within 5 meters. I tried using ir LED pair but the maximum range i got was approx 15 cm. It made me wonder that if tv remotes use the same ir LEDs and can easily work within 7 to 8 meters of range then why isn't this working ???  I am using the following 5 mm LEDs. Will please anyone suggest me how to increase the range

Attachments:
image
Parents

  • LEDs used for remote are not simply turned on and off at the data rate, there also modulated with I think a 38Khz carrier in order to eliminate stray light interference etc, the receivers also have AGC (Automatic Gain Control) in them and will detect the carrier and adjust the gain before sending out the data on its Data pin

     

    If your using a simple IR LED and sensor, I would imagine this may well be you problem

     

    Peter

Reply

  • LEDs used for remote are not simply turned on and off at the data rate, there also modulated with I think a 38Khz carrier in order to eliminate stray light interference etc, the receivers also have AGC (Automatic Gain Control) in them and will detect the carrier and adjust the gain before sending out the data on its Data pin

     

    If your using a simple IR LED and sensor, I would imagine this may well be you problem

     

    Peter

Children
No Data