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wanduhr holders.dxf
27 kb /
142 downloads /
2 years ago
wanduhr front.dxf
42 kb /
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2 years ago
wanduhr bw.pdf
47 kb /
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1 year ago
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raumfahrtagentur.org coretime by raumfahrtagentur is licensed under the Creative Commons - GNU GPL license.
© 2010 by raumfahrtagentur
Instructions
the atmega uses a 12mhz crystal.
ULN2003 is used as low-side driver.
a 2-stage bipolar transistor driver is used for the high sides for the digits (common anode)
note: you will need to laser the top-left part in wanduhr_holders.dxf twice.
source, schematic and more pictures on m21.hyte.de/wiki/Projekte/Wanduhr
