Public Lab Research note

Picayune Make Meeting Notes for 16 August 2014

by danbeavers | August 21, 2014 18:53 21 Aug 18:53 | #11069 | #11069

Event details

20140816_170731.jpg This was the focus of the meeting. Participants drew a design with a permanent marker on a small circuit board and the exposed copper was etched away. This illustrates the process of making a circuit board that you can attach components to.

20140816_165223.jpg The etchant consists of swimming pool acid and hydrogen peroxide. The proportions and safety considerations are readily available on the internet so do your research and be careful.

20140816_165707.jpg Some pennys were partially immersed in the solution to see what would happen.

We meet the first and third Saturday of the month at 5:00pm at the Kimono Dragon in Picayune. This meeting was supported by a grant to Public Lab organizers by Rackspace. The grant was used to purchase electronic components and supplies to build complex circuits.


20140816_172236.jpg The turnout totaled 12 with a very diverse age range from elementary school to retired.

We are looking forward to future meetings where we will convert an old toaster oven into a solder oven to attach surface mount components to the circuit boards.

This event is on 08-16-2014 iCal

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This is fantastic!!! Would love to see the resulting how-to. Also, random fact which may or may not have anything to do with etching, pennies made after 1982 are actually 97.5% zinc and 2.5% copper!

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Nicholas - There are a lot of how-to instructions on etching circuit boards on the Internet if that is what you want to know. I plan on documenting how we convert the toaster oven when we get going on that. Yes "copper" pennies only have a copper plating. We did not etch all of the copper off a penny to get to the zinc.

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