TouchGFX on a custom made low cost board with the ILI9341 controller over SPI

Introduction STMicroelectronics has spent last couple of years developing their embedded graphics framework called TouchGFX. This very powerful graphics engine makes it possible to include snazzy, smartphone-like screens and widgets into the embedded application, what I feel like becomes defacto a standard nowadays. Along with it, they shipped a lot of dev boards and reference … Continue reading TouchGFX on a custom made low cost board with the ILI9341 controller over SPI

1 GHz Bandpass Filter with Distributed Elements

Introduction Working in a microwave engineering area I learned that classic components like capacitors or inductors are ditched away from the filter design and so called distributed elements are used. It means, basically,  that inductances, capacitors, LC circuits are created using conductive lines on PCB instead of soldering old school components. Pretty cool, I thought, let’s … Continue reading 1 GHz Bandpass Filter with Distributed Elements