Chris.Dev.Blog

Motorcontrollers are everywhere, cheap and reliable, but building a field-oriented control (FOC) from scratch to understand the details is a nice challenge. So I accepted the challenge and implemented a full-featured FOC within an FPGA.

Spare parts for Viessmann-controls are quite expensive. As the control of our oil-heater has broken down, I searched for a replacement but in the end I developed a full replacement with MQTT and connection to NodeRED.

Disposing of defective appliances is common practice and repairing them is often uneconomical. However, there are often still very useful components in such devices. I took a closer look at a Thermomix and found a nice motor control unit.

In the last blog-post I discussed developing retro-apps for Windows that can be run under OS/2 using the WLO toolset from Microsoft. But what about native coding under OS/2 directly?

Retrocomputing with real hardware is a very nice way to understand how modern computers have learned to run and talk. I developed some GUI for OS/2 Warp 3.0 and Windows 3.11 to control some of my microcontroller-projects.

Ethernet on Microcontrollers is available without problems: using FreeRTOS or the Arduino-libs is always a good start. But for FPGAs? I was shocked how expensive Ethernet is for FPGAs - but I found a good solution...

Without the possibility to adjust the volume of individual frequency bands within an audio signal, modern audio would not sound the same. Today I'd like to show how I've implemented a EQ within my FPGA audio-mixer.

Based on my Audioplayer-project I developed a DIY card for the Behringer X32. In addition to the youtube-video here you will find some more detailed information about this project and the implementation.

In this video I'm testing the DIY Expansion-Card for the Behringer X32 audio-mixing-console with the Room-EQ-Wizard-Software and I'm showing the new workflow using XTouch-Controllers and more things.

Implementing an audio-compression-algorithm in pure logic is a bit challenging as it uses a division. Time for some deep-diving into audio DSP with VHDL.