Exact replica of the Double Density floppy upgrade board for the Osborne 1
Every part except the PCB can be bought from proper distributors such as Mouser, Digikey, Farnell/element14, LCSC, etc. Avoid chips from Aliexpress/eBay.
Licensed under CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/)
You can share, change, sell, but you must give credit and provide your adaptations under the same license.