Piezo air pump control - help for a newbie

Projects General Guidance
1

This is my first project , I thought is was simple, but maybe not. I have a Adafruit Trinket - Mini Microcontroller - 5V Logic, a pressure sensor Adafruit BMP280 , and a Murata 20mm hi pressure Micro air blower MZB1001T02 . I discovered via this guys work https://www.tindie.com/products/microwavemont/piezoelectric-micro-air-blower/ , I need more that 3.3v DC and 26 kHz , to operate it.

The goal is to get it to blow air and measure it. I want to power it all with just one USB cable. the current draw is 200ma for the pump.

My first hurdle is how to I generate the frequency at the right voltage for the piezo?

thanks

2

Your hurdle is also to generate "Operating Sinusoidal Voltage", not a square wave, which you will get from an Arduino.

Paul

3

thank you for the quick response . based on what you said, it looks like this will do it AD9833 ?

4

parsalog:
thank you for the quick response . based on what you said, it looks like this will do it AD9833 ?

Should do at least the generation side. If you get the evaluation board and controller to interface to a PC, you don't need the Arduino.

Now you need to engineer the way to get the voltage/current up to what the piezo requires.

Paul