The audio component centers around the SS8550 PNP transistor (Q1) which serves as a driver for the passive buzzer (BZ1). This ...

[Pulko Mandy] got his hands on the new STM32 F3 Discovery board. He’s a fan of the open source tools just like we are, so he posted a guide covering the use of an open source toolchain with t… ...

We’ll be using the STM32F042 as the target MCU, but other STM32 families are rather similar from an I2C perspective. We’ll also use CMSIS-style peripheral and register references.