Retired. Software engineer (architecture, design, implementation, sustaining, numerous machine, HLL, scripting languages) by education and experience (symmetrical multiprocessor OS, bit slice, drivers, applications, GUIs, web, scripting). Worked in process control, data communications, medical modalities and PACS, medical device alarms, medical device management. Astronomy hobby, multiple mounts and telescopes, optical and radio, worked with ASCOM and INDI. Own 3D FDM printers, desktop CNC router. Worked with OpenSCAD.