No problem. The biggest issue was my own impatience. I think a big help will be to add some files to the download:http://www.elektronika.ba/misc/warmtube_v2_main_assy.pdfhttp://www.elektronika.ba/forum/download/file.php?id=4672
Also a brief instruction how to program the Atmel with avrdude, with a cheap usbasp adapter or Arduino (I think the usbasp option is the easiest).
The good part is that I can take pictures of the building process this time. Something I forgot completely the first time.
If I find the time I will make some short instructions too.
Due to delivery times and vacation, it will take some weeks before I can start the second round