Sunday, Aug 30, 2026 Week -- 18:41:55
My technical blog
A short place for practical notes, fixes, and technical learnings.
Read latest postsComplete guide to PWM (Pulse Width Modulation): how it works, frequency vs duty cycle, practical MCU configuration examples, real-world use cases including LED dimming, motor control, and DAC simulation. Clear explanations with working code.
Complete guide to GSM/LTE modems for embedded systems: popular modules (SIM800, SIM7600, EC25), AT command protocol explained, practical examples for SMS, calls, HTTP/MQTT, GPS tracking, and remote monitoring applications with working code.
Complete practical guide to running Pi-hole on Raspberry Pi using Docker: Docker Engine installation, compose configuration, router DHCP setup, and network-wide ad blocking for all devices including IoT endpoints.
Complete guide to DMA controllers in embedded systems: how Direct Memory Access works, when to use it, DMA modes and transfer types, practical configuration examples, and common pitfalls to avoid in production code.
Practical guide to CAN bus for embedded developers: protocol fundamentals, bit timing configuration, arbitration and priority, error handling, CAN FD improvements, implementation on STM32 and MCP2515, debugging with CANalyzer, and automotive/industrial use cases.
A practical guide to choosing between ARM Cortex-M microcontrollers and Cortex-A processors for embedded projects. Learn the architectural differences, performance trade-offs, real-world use cases, and decision criteria for MCU vs MPU selection.
Deep-dive into DMIPS vs MIPS: what Dhrystone measures, why MIPS alone is misleading, how to interpret DMIPS specifications in MCU datasheets, and what these metrics actually tell you about real-world performance.
A practical guide to MQTT protocol for embedded systems and IoT. Learn how MQTT works, QoS levels, retained messages, libraries in C/Python/JavaScript/Go, and real-world use cases with code examples.
Practical comparison of ESP32 (Xtensa dual-core MCU with integrated Wi-Fi/BLE) vs ARM Cortex-A application processors for IoT projects. Learn cost, power, complexity tradeoffs, and when each is the right choice for your connected device.
A practical guide to retrieving hardware specifications on Linux and embedded systems: CPU info, RAM, storage, peripherals, network interfaces, kernel details, and embedded-specific hardware data.
A small personal project for exploring mood tracking, visual patterns, and simple user-focused interaction.
A versatile networking and communication toolkit featuring TCP, UDP, MQTT, CAN Bus, Serial Port, and Multicast protocols. Ideal for reliable data transmission, efficient messaging, and robust vehicle communication.
