[chbot] Oscilloscope display made from old HDD

Richard Jones rjtp at ihug.co.nz
Tue Jan 17 06:40:38 GMT 2012

Thanks to all who came to last nights meeting.
We spent some time soldering up Mark Athertons laser bar code scanner,
and discussed turning it into a display.
Here is a reference to how to do something similar with an old hard disk drive:
I have a few old drives spare if anyone needs them, and the Warehouse
used to stock $2 laser pointers. You have to ask for them.


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