Bare-metal STM32L031K6 firmware: an MPU-6050 rendered on a 128×64 SSD1306 OLED as an aircraft-style artificial horizon. No HAL, no CubeMX — direct register access, two independent I²C buses (hardware + bit-banged), and a boot diagnostic ladder that pinpoints wiring faults.
embedded firmware i2c stm32 imu oled ssd1306 keil bare-metal mpu6050 stm32l0 nucleo cortex-m0plus artificial-horizon stm32l031
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Updated
Aug 6, 2026 - C