Modifying an Apple G3 case to fit an AT style motherboard is not an easy task. I decided to do this modification because I happened to have all the parts.
The project began in 1999 when I acquired a G3 with a defective motherboard damaged by water ingress. I always liked the case and thought it was too good to throw away. I had many ideas for the case such as housing a valve amplifier as it had a cooling fan inside. However, where can you find a valve amplifier these days?
Parts Borged from dead machines influenced the design mostly. Currently it houses an Optiplex 170L motherboard.
Just like Michelangelo building a statue, I set out to build a computer. The computer was always there, I simply removed the unneeded bits. :-)
The idea was to keep the external look of the G3, while making changes only to the inside. I considered changing the front switches, and cutting an extra slot for a CD-ROM drive, but decided not to as it would detract from the overall look of a G3.
I have some digital filter algorithms that I have developed in 8086 assembly language and C++, and using a separate faster machine has been very useful.
I also used this machine at a charity event connected to an OHP to display some very smoothly rendered high quality graphics and captions. The computer attracted a huge crowd as everybody thought it was a new experimental design.
This Article Continues...Apple G3 to PC Modification
Inside The Apple G3 Case
Apple G3 Disassembling
Removing Apple G3 Motherboard Standoffs
Making a 20 Pin Molex Extender
Apple G3 with Dell Motherboard
Floppy Drive and CD-ROM Cage Mod
CPU Heatsink and Cooling Assembly
Dell Motherboard Connectors J1F1 and J7J2
Final Results: G3 is now a PC!