Embedded engineering

Embedded engineering blends hardware and software to design microprocessor-based systems for specific, dedicated functions.

Posts about:

  • Hardware Design: Working with schematics, PCBs, and microcontrollers (e.g., STM32, ESP32).
  • Firmware/Software: Writing optimized C, C++, or Rust to interface directly with the hardware
  • Systems Engineering: Balancing power, cost, size, and real-time processing constraints

Posts

Controlling WS2812(B) leds using STM32 HAL SPI
Driving WS2812 and WS2812B LEDs from an STM32 does not require carefully timed bit-banging. SPI can generate the waveform for you, as long as each LED bit is expanded into a short SPI bit pattern. This post explains the timing math and the full reasoning, but builds toward the practical result: use an 8-bit encoding, send the data in GRB order, and run SPI somewhere around 3 to 6 Mb/s.
Embedded engineering
Controlling WS2812(B) leds using STM32 HAL SPI
How to use printf with STM32 UART
You have to implement a special function (_write) to tell the C-library how to process the output from the printf function.
Embedded engineering
How to use printf with STM32 UART
STM32F401/411 black pill development board
Similar form factor to the blue pill boards. However this board is much more powerful and of a much better build quality.
Embedded engineering
STM32F401/411 black pill development board
STM32F103 blue pill development board
There are many boards featuring the STM32F103. The blue pill is probably the cheapest one of them.
Embedded engineering
STM32F103 blue pill development board