I'm pretty new to Arduino projects, and I could really use some veteran guidance. The project I'm working on requires a square wave output at approx 10kHz. I'm currently using an Arduino Micro PWM output, which I understand has a frequency of about 490Hz. Can anyone recommend a small and lightweight (this is a must; the circuit will be flying on a small UAV) frequency multiplier to get this accomplished? Will putting a frequency multiplier in line cause a voltage drop from the Arduino's native 5V? Any help on this would be very much appreciated. Thanks in advance.
I'm trying to find a way to change the output frequency on my Arduino Micro. Through web searching, I've found plenty of places that list code to accomplish this for many other Arduinos (http://letsmakerobots.com/content/changing-pwm-frequencies-arduino-controllers , for instance), but not for the Micro, which uses the ATmega32U4 processor. I'm really new to microelectronics; my odds of figuring this out on my own are pretty lousy. I'd really appreciate any veteran guidance on this. Thanks in advance!
Hi,
What application do you gave that needs a programmable PWM frequency?
You can measure the frequency with a frequency counter, an oscilloscope or a Digital Multimeter if it has a frequency range (Quite a few cheap ones have).
I gather the Micro has the same cpu as the Leonardo.
Thanks Tom. The posted link looks promising. The application is a toggle-able piezo disk affixed to a resonator to act as a synthetic jet for flow correction on a small UAV. The higher I get the triggering frequency, the smaller (and therefor lighter) I can design the resonator.
