From Microcontroller to Mainframe
In the past 20 years I worked on systems as small as 8bit microcontrollers with no Operating System to systems as large as IBM Z-Series Mainframes. I wrote software for small FreeRTOS and RTEMS based controller with only a few LED’s as “output” to GUI programs for Windows and Linux.
Since low level programming has some special demands on the programming language the main languages I use, and consider myself a professional in, are C, C++, and when it can’t be avoided assembly. Other languages like Python, bash-scripting, lua, cmake, are also part of my daily work.
Due to personal interest and experience there are some areas where I can offer additional knowledge that can speedup things compared to software developers that are new in those areas.
Linux Embedded Distribution Development
For systems that can’t use an average Linux distribution like Debian, Fedora, etc. because of for example storage size restrains I develop highly customizable distributions based on PtxDist or Yocto that can be as small as 8 MByte.
Low Level Driver Development
When there is a need for a small specialized Linux distribution it most of the times means there is some custom hardware in use. For that hardware I can develop low level device drivers for the Linux kernel and bootloaders like U-Boot and Barebox.
RTOS and Baremetal
Lighting Control for stage and theater is an rather specialized area with several unique technologies. Having knowledge of technologies like for example DMX, RDM, Art-Net and ACN, makes it a lot easier for me to get up to speed in software development projects that deal with those technologies.
Public Information Systems
Like with Lighting Control systems, Public Information Systems in the public transportation area deal with specialized protocols and demands. Working for clients in doing public transportation information systems and for clients doing public transportation power converters I collected extensive knowledge in that area.
80s and 90s Demoscene
The Art Of The Algorithms
Great documentary on the 80s and 90s demoscene, which makes you want to get out your C64 and start programming again.
First PCB Design
PCB for debug adapter
How do you mean I can’t do
make clean, fix bugs,
make all ? When software engineers make hardware things can only go wrong; notice the size of the switch and the footprint on the PCB. But apart from that, pretty fly for a software guy.
The PCB design was done with KiCad on Linux (but it is also available for Windows and MacOS).
RGB LED Display test
New 4 channel Power Supply
To better handle the power supply needs (3.3V, 5V, 12V, 24V, etc.) of the diverse hardware I work with I replaced my old 3 channel Hameg power supply with a new Rohde&Schwarz HMP4040.
New 4/16 channel Oscilloscope
Since almost every project I did the last decades all use something like I2C, SPI, CAN, RS458, etc. I replaced my old Tek scope with a new Rohde&Schwarz RTM3004 that can do decoding of those protocols, so I don’t have to manually count bits anymore.
BK Precision 9206
New 150VDC Power Supply
Since I have several projects for public transportation information systems, where the use of 110VDC is common, I added a BK Precision 150VDC power supply to my lineup of equipment.
New bench multimeter
To be able to better measure things like ADC inputs, DAC outputs, I extended my equipment lineup with a Rigol DM3068 bench multimeter.