L
logjam
- Jan 1, 1970
- 0
I thought I would share some PCB scans and x-rays. Someone might be
interested in them.
If you are, save them now. They might not be on the internet FOREVER!
A hint, schematics in manuals rarely matched the kit boards you
purchased. In fact there was usually a cover page that listed changes
to make to the board (component additions, jumper wire rerouting, etc)
So board scans and x-rays ARE useful! A really cool shot is the
last one. It is the back board scan processed and then overlaied on
top of the x-ray. Purple traces are on the top of the board, orange
are on the bottom.
I made these to duplicate the board. I will be tracing the artwork and
making gerber files.
One interesting thing, the SN74123N next to the crystal has a metal
backing on the die and the SN7406N and SN7404N right next to it does
not.
Front Scan:
http://www.stockly.com/images2/060119-Altair_8800_CPU_BD_Rev0_Front-Cropped-Rotated.jpg
Back Scan:
http://www.stockly.com/images2/060119-Altair_8800_CPU_BD_Rev0_Back-Flipped-Cropped-Rotated.jpg
X-Ray: (to scale)
http://www.stockly.com/images2/060119-Altair_8800_CPU_BD_Rev0-XRAY.jpg
Hybrid X-Ray/Back Scan: (this allopws you to see the traces on the
front and back at the same time without desoldering components)
http://www.stockly.com/images2/060119-Altair_8800_CPU_BD_Rev0-Composite.jpg
If you can do a better composite, go right ahead! and send me the
results and instructions!
Have fun!
interested in them.
If you are, save them now. They might not be on the internet FOREVER!
A hint, schematics in manuals rarely matched the kit boards you
purchased. In fact there was usually a cover page that listed changes
to make to the board (component additions, jumper wire rerouting, etc)
So board scans and x-rays ARE useful! A really cool shot is the
last one. It is the back board scan processed and then overlaied on
top of the x-ray. Purple traces are on the top of the board, orange
are on the bottom.
I made these to duplicate the board. I will be tracing the artwork and
making gerber files.
One interesting thing, the SN74123N next to the crystal has a metal
backing on the die and the SN7406N and SN7404N right next to it does
not.
Front Scan:
http://www.stockly.com/images2/060119-Altair_8800_CPU_BD_Rev0_Front-Cropped-Rotated.jpg
Back Scan:
http://www.stockly.com/images2/060119-Altair_8800_CPU_BD_Rev0_Back-Flipped-Cropped-Rotated.jpg
X-Ray: (to scale)
http://www.stockly.com/images2/060119-Altair_8800_CPU_BD_Rev0-XRAY.jpg
Hybrid X-Ray/Back Scan: (this allopws you to see the traces on the
front and back at the same time without desoldering components)
http://www.stockly.com/images2/060119-Altair_8800_CPU_BD_Rev0-Composite.jpg
If you can do a better composite, go right ahead! and send me the
results and instructions!
Have fun!