Hi Guys
I have been learning about core memory, and would like to try one of my own just for a fun project.
I’ve learned about as much as I can watching Jeri Ellsworth’s video, and several pages out there
explaining how it works, how to drive the matrix, and also interface to a micro controller:
http://www.corememoryshield.com/report.html
I still have a few questions...
I understand the resistors must set current, and if they weren’t present, every row or column would be a short circuit.
If I could not find the exact dimensions of ferrite rings used in the above micro controller project,
is the resistor value the way to compensate to change current flow (so long as the transistors can drive the current)?
In a noisy circuit, would it be a good idea to shield with copper? and it would matter the copper was not close to the beads?
I only have in mind an 8x8 matrix to store 2x32 bit floats (a geo location).
If I went all out with 64 beads I’ll want to mount it in something.
Cheers, Art.
This is a closeup of a quarter of a 1024 bit matrix (so only 256 bit shown here)
I have been learning about core memory, and would like to try one of my own just for a fun project.
I’ve learned about as much as I can watching Jeri Ellsworth’s video, and several pages out there
explaining how it works, how to drive the matrix, and also interface to a micro controller:
http://www.corememoryshield.com/report.html
I still have a few questions...
I understand the resistors must set current, and if they weren’t present, every row or column would be a short circuit.
If I could not find the exact dimensions of ferrite rings used in the above micro controller project,
is the resistor value the way to compensate to change current flow (so long as the transistors can drive the current)?
In a noisy circuit, would it be a good idea to shield with copper? and it would matter the copper was not close to the beads?
I only have in mind an 8x8 matrix to store 2x32 bit floats (a geo location).
If I went all out with 64 beads I’ll want to mount it in something.
Cheers, Art.
This is a closeup of a quarter of a 1024 bit matrix (so only 256 bit shown here)