Engineering notes
Practical notes about electronic design, PCB development, embedded systems, power electronics and hardware debugging. The articles focus on real engineering problems, measurements, design decisions and lessons learned during development.
Latest notes
The first articles are currently being prepared. Each publication will describe a specific engineering problem without disclosing confidential client information or production documentation.
Hardware debugging
Pull-up selection, parasitic powering, false fault detection, input filtering and oscilloscope-based diagnostics for industrial fan tachometer lines.
Battery management
How the TS1 pin is used for wake-up, why it is not a standard GPIO, and how incorrect control can create an unwanted discharge path through the first battery cell.
Embedded systems
A practical method for calibrating ADC voltage measurements using a multiplicative coefficient stored in Flash and updated through a CAN command.
Power electronics
Communication and measurement problems that appear when several isolated charger modules interact with cells connected in one series battery pack.
High-speed PCB
Differential routing, impedance control, return paths, vias, mechanical constraints and design decisions for compact high-speed riser boards.
Flex PCB
Current demand, voltage drop, thermal behaviour, data integrity and power-injection strategy in a dense flexible WS2812 display.
About the blog
Real symptoms, possible causes, measurements, debugging methods and technical conclusions from electronics-development work.
Explanations of component selection, interface architecture, protection circuits, PCB-layout trade-offs and firmware implementation choices.
Project-specific schematics, PCB source files, firmware, production data and client information are intentionally omitted where they are confidential or proprietary.
The articles describe general engineering principles and personal technical experience. They are not substitutes for product datasheets, safety standards or project-specific validation.
Contact
Contact me if you would like to discuss one of the articles, suggest a topic or talk about an electronics-development project.