A hard fault with STM32 and FatFs is common when STM32 CubeMX or FreeRTOS are not set up correctly. Here are some solutions that work!
Do you have a blank desktop on your Ubuntu virtual machine after trying to install the VirtualBox Guest additions? Here is the solution.
STM32 audio tutorial (part 2) goes over I2C setup and communication with the audio codec module to initialize it and set up audio playback.
A short note and example schematic for using LED flash with OV2640, OV5640, and any other OmniVision camera sensor module.
A quick solution to error “undefined reference to function” in STM32 CubeIDE or any other STM32 development IDE.
Debug printf for STM32 can be a useful tool to print out system logs without using UART when SWO output is used. Here is a tutorial for SWO.
Using multiple SIM cards with SIMCom or Quectel modems is easy using multiplexers and a basic logic controller. Modems must support hot swap.
Notes on how to connect ESP32 with quad SPI PSRAM memory. Example ESP32 PSRAM schematic using ESP-WROOM-32 and ESP-PSRAM64.
Synchronous rectifier design for isolated high power PoE+ (802.3 at and bt) applications can help increase efficiency and reduce heat.
MCUs like STM32 and i.MX RT1050 series have a 24-bit parallel RGB interface for displays. RGB to MIPI DSI converters allow DSI displays.