Spotted in the MAKE Forums:

If you’ve been needing some extra space for your microcontroller program, then you might want to take a look at Wayne Holders’ latest project, Magnetic Core Memory for Arduino. All you need are some H-Bridge drivers, a separate power supply, and a piece of hard ferrite, and you’ll be well on your way to adding an extra bit of storage!

OK, core memory might have gone obsolete a long while ago, so if you really need the space I suggest using some external i2c EEPROM chips. However, if you are interested in learning about how magnetic memory works, then I definitely recommend checking out his project. Bonus points to anyone who figures out how to patch avr-ld to make use of the extra space!

  • trevithick

    About ten years ago I had the privelage of touring a small company in Arizona that still makes core memory.

    You won’t find it in common useage, but it is still used for specific military purposes because it is inherently resiliant.

    The tour was fascinating and I was surprised at all the different sizes (physically) and shapes offered.

  • Anonymous Categories By: MnZn – Ferrite Cores :: Ni Zn – Ferrite Cores