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Hi! I'm trying to find out how many person-years have been invested in the development of the Arduino hardware (not all the shields, just the actual Arduinos), and just can't find anything out there. Has anyone seen an estimate they can point me to, or have a decent idea of how to estimate such a thing? thanks for your time!
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Why?
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Development time for the hardware would I think be eclipsed by the time that went into the software. Once the first hardware platform was defined, the others are basically variations with the same and bigger processors.
Writing all the libraries, and pin mappings end making updates from the wiring/processing code that preceeded it, I think that would have been the long part.
And then all the time that would have gone into gettiing it manufactured & distributed...
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"Freeduino" took about 3 months of rather casual development effort to go from the (not quite correct) diecimilla reference design to its final state.

These things are hard to estimate because you're talking about adding relatively small features (auto-reset, power-switching, etc) to rather basic original designs, and there was usually someone that had already done part of the work...
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"Freeduino" took about 3 months of rather casual development effort to go from the (not quite correct) diecimilla reference design to its final state.

These things are hard to estimate because you're talking about adding relatively small features (auto-reset, power-switching, etc) to rather basic original designs, and there was usually someone that had already done part of the work...

Plus do you add all of the time ATmel took to design the processor before the Arduino team started doing their initial reference design.  Do you add the time spent doing other tools like the GCC compiler (either just the avr backend, or the entire GCC compiler).
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Plus do you add all of the time ATmel took to design the processor before the Arduino team started doing their initial reference design.  Do you add the time spent doing other tools like the GCC compiler (either just the avr backend, or the entire GCC compiler).

It took approximately fourteen billion years for arduino to come about.
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It took approximately fourteen billion years for arduino to come about.

Good answer.
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