I suppose it was inevitable.  Azimov’s immutable Three Laws of Robotics are:

1. A robot may not injure a human being or, through inaction, allow a human being to come to harm.
2. A robot must obey any orders given to it by human beings, except where such orders would conflict with the First Law.
3. A robot must protect its own existence as long as such protection does not conflict with the First or Second Law.

My bot has injured a human, me.  The other day I leaned in too close to observe a build and the ‘bot’s Z axis pulley/belt yanked out a hair from my head.

My bot has refused to obey the orders of a human.  Refusing to obey my orders is kinda the default mode for my ‘bot.

My bot has harmed itself despite my numerous verbal commands to the contrary.  When aborting a build my ‘bot has occasionally tried to carry out additional orders – by pushing the Y or X carriage so far that either the pulley, belt, or both are shoved out of whack, thus damaging it’s own alignment.

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There are at least four thermistor tables out there to choose from.  Zach 1, Zach 2, Jet, and Tim.  The first time I updated my extruder board’s firmware with a new temperature table I used Jet’s and the second time I used Zach 1.  (The second time was because the extruder spark incident and almost certainly unrelated to Jet’s table).

My understanding is that Tim’s table has a higher “resolution,” meaning there’s a lot more resistance / temperature pairs.  However, I’ve been using Zach 1 without a problem so there’s no reason for me to switch.

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