user71887: I have a project which uses an IR LED and receiver to communicate with other Arduinos. I am using the Atmega328 out of the Uno, rather than the whole Arduino board and I need it to be battery-powered, so I need to use a voltage regulator to maintain 5V to the chip.
I want to avoid a linear regulator if I can, as they are inefficient, but I'm worried that the other types will cause too much noise on the output and it will interfere with the IR communication.
Should I be concerned about this or am I making a fuss about nothing, I can always use a linear one if I need to.
Thanks in advance.

user71887: I bought a switching mode voltage regulator (buck-boost) to test it and it works fine, I put a 10uF capacitor across the output to reduce noise but that was just a precaution - I don't know if it was necessary.

71887: <p>I have a project which uses an IR LED and receiver to communicate with other Arduinos. I am using the Atmega328 out of the Uno, rather than the whole Arduino board and I need it to be battery-powered, so I need to use a voltage regulator to maintain 5V to the chip.</p>
<p>I want to avoid a linear regulator if I can, as they are inefficient, but I'm worried that the other types will cause too much noise on the output and it will interfere with the IR communication.</p>
<p>Should I be concerned about this or am I making a fuss about nothing, I can always use a linear one if I need to.</p>
<p>Thanks in advance.</p>
 71887: <p>I bought a switching mode voltage regulator (buck-boost) to test it and it works fine, I put a 10uF capacitor across the output to reduce noise but that was just a precaution - I don't know if it was necessary.</p>
