All of the above...

And "lack of a spec".

When the EE gets given a rough "idea" of what sales want, then designs for it.
A rough fag packet schematic then gets passed to me, I then make a CAD schematic, then
after a review (which is never done completely - as Karl mentioned) I start the PCB.

During this, the non existent spec keeps damn changing, so I rip up & start again so many times.

Then when we are finished and it fits perfectly the verbal spec that the EE was given, we get told.
"oh no, I didn't mean like that - I want this" and we start again!

Grrrrr.....!!!!

Such is life, keeps me employed I suppose. (especially when it makes projects last years instead of a few month)

Matthew.


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