Sure! * Large Driver - https://www.adafruit.com/product/1784 https://www.adafruit.com/product/1784 * Small Driver - https://www.adafruit.com/product/1785 http

Sure! * Large Driver - https://www.adafruit.com/product/1784 https://www.adafruit.com/product/1784 * Small Driver - https://www.adafruit.com/product/1785 https://www.adafruit.com/product/1785 There is a wide range of transducers out there, if you start digging around the units can be hard to find. Sometimes they are called Exciters. This company PUI Audio makes a bunch. https://www.digikey.com/en/product-highlight/p/pui-audio/audio-sound-exciters https://www.digikey.com/en/product-highlight/p/pui-audio/aud... The large transducers from Adafruit are such odd components. I haven't really found anything that will push that much power, but I think there are better packages for my application. They sound great with the recommended 20w amp. Here is the STM32Discovery board I am using and the FFT libs. http://www.st.com/content/st_com/en/products/evaluation-tools/product-evaluation-tools/mcu-eval-tools/stm32-mcu-eval-tools/stm32-mcu-discovery-kits/32f411ediscovery.html http://www.st.com/content/st_com/en/products/evaluation-tool... https://stm32f4-discovery.net/2014/10/stm32f4-fft-example/ https://stm32f4-discovery.net/2014/10/stm32f4-fft-example/