Hi, Ich hab in Wien noch nie Elektronik gekauft. Jetzt brauch ich aber ein paar ledthrowies Teile. Wo geh ich da am besten hin? Für Batterie LED und Magnet?
Dein Elternbeitrag für den Weihnachtsmarkt? :D Unser Bauteilsortiment sollte doch alles haben. Vielleicht außer der Batterie. http://metalab.at/wiki/Bauteilsortiment Am 20.11.2010 um 20:29 schrieb Christian Meisenbichler:
Hi, Ich hab in Wien noch nie Elektronik gekauft. Jetzt brauch ich aber ein paar ledthrowies Teile. Wo geh ich da am besten hin? Für Batterie LED und Magnet?
-- Thomas R. "TomK32" Koll just a geek trying to change the world http://ananasblau.com || http://photostre.am || http://photolog.at
2010/11/20 Christian Meisenbichler <christian.meisenbichler@mu-leoben.at>:
Hi, Ich hab in Wien noch nie Elektronik gekauft. Jetzt brauch ich aber ein paar ledthrowies Teile. Wo geh ich da am besten hin? Für Batterie LED und Magnet?
http://www.ozhobbies.eu/ G.R.L. Vienna (sort of) approves. M -- http://niij.org/
erm. just be aware that led throwies are a bit of an environmental disaster. try and make it so you clean up properly after you're done. batteries in the groundwater == very very bad for the environment. On 20 Nov 2010, at 20:29, Christian Meisenbichler wrote:
Hi, Ich hab in Wien noch nie Elektronik gekauft. Jetzt brauch ich aber ein paar ledthrowies Teile. Wo geh ich da am besten hin? Für Batterie LED und Magnet?
_______________________________________________ Metalab mailing list Metalab@lists.metalab.at http://lists.metalab.at/mailman/listinfo/metalab
-- damian stewart . @damiannz . damian@frey.co.nz frey . contemporary art . http://www.frey.co.nz
On 11/22/2010 01:34 PM, Damian Stewart wrote:
erm. just be aware that led throwies are a bit of an environmental disaster. try and make it so you clean up properly after you're done. batteries in the groundwater == very very bad for the environment.
This depends a lot on cell chemistry. Lithium cells are typically lithium - manganese dioxide, which I'd both consider harmless. Well, Lithium and it's followup compounds are caustic, but once diluted or neutralized I'd have no problem drinking them. Lithium is even used as medicine. The electrolyte is a lithium salt dissolved in a mixtiure of organic solvents, e.g. Lithium perchlorate in propylene carbonate and dimethoxyethane (DME). Lithium perchlorate doesn't seem to be a big problem in the case of a few lithium cells dumped in the soil. Propylene carbonate is irritating and is replacing the environmentally more harmful cresols. Dimethoxyethane is miscible with water toxic and can impair reproductivity and cause birth defects. http://www.jtbaker.com/msds/englishhtml/d5712.htm says: Do not flush to sewer! US Regulations (CERCLA) require reporting spills and releases to soil, water and air in excess of reportable quantities. Degradation products may be more harmful. It is not, however, flagged as 'harmful for the environment'. I don't know how it is degraded. It can form peroxides with oxygen. So, while a few typcial lithium cells may not be a long term hazard it is still a good idea to avoid their release to the environment. They are certainly less harmful than cells which contain the toxic heavy metal element mercury (these are quite rare these days, IMO) and recharchable NiCd cells which contain the toxic heavy metal element cadmium. Chemical elements can not be degraded (except with nuclear reactions). Bernhard
well.. i guess i'm wrong then :-) well, it still just _feels_ wrong to go and throw batteries around... On 22 Nov 2010, at 15:21, Bernhard Kuemel wrote:
On 11/22/2010 01:34 PM, Damian Stewart wrote:
erm. just be aware that led throwies are a bit of an environmental disaster. try and make it so you clean up properly after you're done. batteries in the groundwater == very very bad for the environment.
This depends a lot on cell chemistry.
Lithium cells are typically lithium - manganese dioxide, which I'd both consider harmless. Well, Lithium and it's followup compounds are caustic, but once diluted or neutralized I'd have no problem drinking them. Lithium is even used as medicine.
The electrolyte is a lithium salt dissolved in a mixtiure of organic solvents, e.g. Lithium perchlorate in propylene carbonate and dimethoxyethane (DME).
Lithium perchlorate doesn't seem to be a big problem in the case of a few lithium cells dumped in the soil.
Propylene carbonate is irritating and is replacing the environmentally more harmful cresols.
Dimethoxyethane is miscible with water toxic and can impair reproductivity and cause birth defects.
http://www.jtbaker.com/msds/englishhtml/d5712.htm says: Do not flush to sewer! US Regulations (CERCLA) require reporting spills and releases to soil, water and air in excess of reportable quantities.
Degradation products may be more harmful.
It is not, however, flagged as 'harmful for the environment'. I don't know how it is degraded. It can form peroxides with oxygen.
So, while a few typcial lithium cells may not be a long term hazard it is still a good idea to avoid their release to the environment.
They are certainly less harmful than cells which contain the toxic heavy metal element mercury (these are quite rare these days, IMO) and recharchable NiCd cells which contain the toxic heavy metal element cadmium. Chemical elements can not be degraded (except with nuclear reactions).
Bernhard
_______________________________________________ Metalab mailing list Metalab@lists.metalab.at http://lists.metalab.at/mailman/listinfo/metalab
-- damian stewart . @damiannz . damian@frey.co.nz frey . contemporary art . http://www.frey.co.nz
* Damian Stewart <damian.ml@frey.co.nz> [2010-11-23 14:31]:
well, it still just _feels_ wrong to go and throw batteries around...
biodigradable batteries, anyone? now *that* would cause a craze! :) Sven -- In-Depth Security Conference 2010 Renaissance Penta Vienna Hotel aka DeepSec http://www.deepsec.net Ungargasse 60, A-1030 Vienna.at Tue-Fri 23-26 November 2010 map: http://tinyurl.com/vienna-penta Fri 26th Nov 20h - http://metalab.at/wiki/2010-11-26_DeepSec_Party
On 11/23/2010 09:45 PM, Sven Guckes wrote:
* Damian Stewart <damian.ml@frey.co.nz> [2010-11-23 14:31]:
well, it still just _feels_ wrong to go and throw batteries around...
biodigradable batteries, anyone? now *that* would cause a craze! :)
Stick some copper and zinc in a lemon. Copper is harmful to the environment, though. A graphite rod might do instead. Bernhard
On Tue, Nov 23, 2010 at 10:50:19PM +0100, Bernhard Kuemel wrote:
On 11/23/2010 09:45 PM, Sven Guckes wrote:
* Damian Stewart <damian.ml@frey.co.nz> [2010-11-23 14:31]:
well, it still just _feels_ wrong to go and throw batteries around...
biodigradable batteries, anyone? now *that* would cause a craze! :)
Stick some copper and zinc in a lemon. Copper is harmful to the environment, though. A graphite rod might do instead.
Do we have to use imported fruits? Just think of the carbon footprint! SCNR -mihi -- Nature has no stake in being understood by scientists. Michael J. Crawley in ISBN 0-470-02298-1
On 11/23/2010 11:20 PM, Michael Bauer wrote:
On Tue, Nov 23, 2010 at 10:50:19PM +0100, Bernhard Kuemel wrote:
On 11/23/2010 09:45 PM, Sven Guckes wrote:
* Damian Stewart <damian.ml@frey.co.nz> [2010-11-23 14:31]:
well, it still just _feels_ wrong to go and throw batteries around...
biodigradable batteries, anyone? now *that* would cause a craze! :)
Stick some copper and zinc in a lemon. Copper is harmful to the environment, though. A graphite rod might do instead.
Do we have to use imported fruits? Just think of the carbon footprint!
Local vinegar probably works, too. A Zamboni pile might work for centuries. Bit bulky for a throwie, though.
On 23.11.2010 11:26 PM, Bernhard Kuemel wrote:
On 11/23/2010 11:20 PM, Michael Bauer wrote:
On Tue, Nov 23, 2010 at 10:50:19PM +0100, Bernhard Kuemel wrote:
On 11/23/2010 09:45 PM, Sven Guckes wrote:
* Damian Stewart <damian.ml@frey.co.nz> [2010-11-23 14:31]:
well, it still just _feels_ wrong to go and throw batteries around...
biodigradable batteries, anyone? now *that* would cause a craze! :)
Stick some copper and zinc in a lemon. Copper is harmful to the environment, though. A graphite rod might do instead.
Do we have to use imported fruits? Just think of the carbon footprint!
Local vinegar probably works, too.
A Zamboni pile might work for centuries. Bit bulky for a throwie, though.
Uppsala University: "green algae -> green battery" http://www.uu.se/en/node1038 Sony: "Bio Battery - sugar" http://www.sony.net/SonyInfo/technology/technology/theme/bio_01.html Fuji: "EnviroMAX™ ... if it is disposed of through normal waste systems" http://www.greenfuji.com MIT & Polytechnic Institute: "carbon nanotubes on a silicon substrate .. gaps between the tubes with cellulose" http://arstechnica.com/old/content/2007/08/scientists-create-paper-thin-flex... http://web.mit.edu/press/images/researchers/hammond.pdf
On 11/23/2010 09:45 PM, Sven Guckes wrote:
* Damian Stewart <damian.ml@frey.co.nz> [2010-11-23 14:31]:
well, it still just _feels_ wrong to go and throw batteries around...
biodigradable batteries, anyone? now *that* would cause a craze! :)
There are also solar cells. I recently broke apart some and soldered the pieces in series. Got 5V or so from 12 pieces. Charge a supercap and wait till it's dark.
F�hrt vielleicht jemand hin ? Ich werde Mo-Do vor Ort sein, vielleicht sieht man sich ja ?
Teilnehmer (10)
-
Benjamin Klemencic -
Bernhard Kuemel -
Christian Meisenbichler -
Damian Stewart -
Marius Kintel -
Michael Bauer -
Michael Zeltner -
Robert Maier -
Sven Guckes -
Thomas R. Koll