B4R Question 38 kHz

[Lee Ingram]

This seems like a dumb question. Is it possible to generate a 38 khz square wave on one pin and still be able to use the other I/O pins?

 

[Roycefer]

This might be of some interest: https://arduino-info.wikispaces.com/Arduino-PWM-Frequency

 

[Erel]

Also this: http://playground.arduino.cc/Main/TimerPWMCheatsheet

It should be simple to change pin 9 frequency to 31372 hz.

 

[Lee Ingram]

Thank you for the info. I would like the pin to be constantly output 38khz. Having the 38khz running in the background, and use other pin for detecting reflections.