In version 0.1, there was a pretty major design flaw: instead of sending -9 to +9v to the scanner head, the design I used actually sent 0 to +5v, this was noticeable in that the scanning head made almost no noise.
I’ve just completed a full redesign of the X-Y signal path and here is video (with oscilloscope proof) of the vastly improved signal output to the scanner head.
So just in time for Thanksgiving, we are a major step closer to the beta!
With a lot of help, I’ve hit the 0.1 milestone (proof of concept), so it’s time to release version 0.1 of the ChemHackerSTM designs and source code. As the version number indicates, this is a proof of concept device — if you follow these plans, you’ll get an STM that sort-of works – no promises.
All designs and source code in version 0.1 is hereby released under GPL 3.
The physical microscope is built and works. It’s still fiddly – I have several design improvements in mind.
The microscope’s electronics work, and will probably not change only moderately between now and version 1.
Video and source code after the jump. Read the rest of this entry »
I <3 this series of chemistry vids from the University of Nottingham.
Some of my favorites after the jump: Read the rest of this entry »