Hi guys! I'm looking for this project:https://www.pcbway.com/project/share/Dolby_Prologic_Surround_Decoder_5_1_Channel_Audio_Processor_SSM2126A.html?upId=0&sid=13R0wX1Jm8ywNJLRORRQeT1ik1P...
Since I've no experience with buzzers, if there are any good ways to choose the right resistor and npn. By the way, I'm using STM32's MCU, supplied with 3V1 to drive a buzzer (GSC4417YA-16...