Arduino Nano Based 4-Port SATA Switcher, with 24 hour auto-switching Function.
(Poor Man’s Physical Layer Switch)
This Stack-able Backup Unit, allows 4 (and up to 20!) Laptop 2.5" Hard drives or Solid state drives, to be switched out like cartridges automatically, every 24 hours.
(Using a Single Arduino Nano!)
See Full Project Details and build guide at:
Code is there as well!