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Infrared (IR) is a form of light which is not visible to the human eye. It can be used in a variety of applications, including remote controls, data transfer, reflectance sensing, and proximity/motion detection.

1 vote
3 answers
944 views

Change range of IR programatically

I am building a IR-based laser tag system. The basics are working fine. One feature, that I want to have, is different weapon modes with different ranges. … How can I change the range of an IR transmitter with as little hardware as possible, or at best, completely in software? …
Dakkaron's user avatar
  • 239
5 votes
1 answer
115 views

IR frequency difference

I only found IR-receivers using 37.9 or 38 khz. Can I use them? How far can the modulation frequency differ? Is there anything else I need to watch out for when creating an IR-interface? …
Dakkaron's user avatar
  • 239