Hi guys
What are the options available to control the power output in software of a 38KHz IR LED that sending some codes (NEC code etc...) . Here are what I can come up with:
What are the options available to control the power output in software of a 38KHz IR LED that sending some codes (NEC code etc...) . Here are what I can come up with:
- PWM the 38KHz (will that work?)
- Using a programming able current source/sink?
- or simply switch in and out different resistor values?
- The reason I want to do that is so I can control the range (roughly) of the IR signal.
- There is a 38KHz IR receiver at the other end.
- Planing to use NEC code (only because that's the one I am familiar with), but better coding is welcome
- only 4 bytes of data