Radioactive sources
l.i.papadopol
This is my actual collection of radioactive sources. Thorium Kodak lens Kodak had made some 35mm analog film models of cameras (1950-1970) like Retina IIIc, with thoriated lens. This example…
2018
Schematics/Gerber
MadEXP PMT Adapter v2.0 schematic/gerber files plus license. Click on the link to download. MadExp PMT MadEXP PMT Adapter v2.5 schematic/gerber files plus license. Click on the link to download.…
Z80 Single Board Computer
My First Didactic 8-bit Z80-based Computer I built this computer because I’ve been interested in creating a working computer from TTL chips since my high school days. The Z80 microprocessor,…