ChemHackerSTM 0.1 Schematics and Source Released w/GPL3

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 »

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Now for sale: Periodic Tables of the Elements

I had a lot of fun making these ChemHacker styled periodic tables – the project was very educational – both through studying the periodic table closely and learning to use Inkscape more.

They are digital prints on laminated card stock – $7 each with free shipping to the continental USA.

More details on the Periodic Table Page.

I’ll have a few samples to show off at Maker Faire this weekend!

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How I etch STM tips

If you’ve been following the chemhacker twitter feed, you’ll know that I promised video of the etching I accomplished last weekend.

The video does a much better job of explaining the process than my words can:

A few notes: I made a few mistakes on the narration (it was late!):

1. The drop of “water” suspended in that steel plate is actually 2 molar sodium hydroxide (yikes)

2. Yes, those resistors are clearly in parallel, not series (gimme a break, I was tired)

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