https://toorun.dev/tags/embedded-systems/Recent content in embedded-systems on toorun.devHugo -- gohugo.ioen-usWed, 19 Aug 2026 12:00:00 +0000https://toorun.dev/posts/mcu-vs-cpu-vs-mpu-understanding-processors-and-microcontrollers/Wed, 19 Aug 2026 12:00:00 +0000https://toorun.dev/posts/mcu-vs-cpu-vs-mpu-understanding-processors-and-microcontrollers/Quick Definition Three terms that often confuse beginners in embedded systems: Term Full Name Purpose Complexity CPU Central Processing Unit Execute instructions in general-purpose computing High MPU Microprocessor Unit Execute instructions with memory management Medium-High MCU Microcontroller Unit Control and automation in embedded systems Low-Medium The key insight: CPU and MPU are processors; MCU is a complete computer on a chip. CPU (Central Processing Unit) A CPU is the brain of your desktop, laptop, or server.https://toorun.dev/posts/obd2-protocol-explained/Wed, 12 Aug 2026 10:00:00 +0000https://toorun.dev/posts/obd2-protocol-explained/What is OBD2? On-Board Diagnostics 2 (OBD2) is a standardized automotive diagnostic protocol that allows external devices to query and monitor the status of a vehicle’s engine control unit (ECU) and other subsystems. Every vehicle sold in the United States since 1996, and in the European Union since 2001, must have an OBD2 interface. Historical Context 1980s: Original OBD (OBD1) introduced with limited diagnostics and proprietary implementations per manufacturer 1996: U.