Raspberry Pi Virtual Floppy for ISA (PC XT/AT) Computers

I was tired of carrying media back and forth to my homebuilt XT computer, so I used dual-ported RAM to build a virtual floppy replacement that serves floppy images up from a raspberry pi. A small BIOS extension loaded into the dual-ported RAM simulates a floppy disk drive. Requests are made by the ISA PC, and served by the raspberry pi.

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Make a coffee machine

Make a coffee machine The excellent Rulof Maker shows how to make a coffee machine out of old lamps and light bulbs. Points for using magnets, and bonus points for using Magnetix magnets.

Great work by Dmitry.GR reverse engineering and hacking wireless eInk price tags to make updating grey-scale picture franes, Great work was done discovering eInk control waveforms to show greys and yellows and whites on 2 colour displays. See the full project here: https://dmitry.gr/?r=05.Projects&proj=29.%20eInk%20Price%20Tags

V4 solenoid engine

Emiel, of the Practical Engineer , shows how to make a crankshaft-based solenoid engine, demonstrating a press drill and a lathe. There's a detailed blog post with instructions as well as a YouTube video also show below.

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