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From: Paul Rubin <no.email@nospam.invalid>
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Subject: Re: microsecond resolution delay and time
Date: Sat, 25 Mar 2017 22:18:58 -0700
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rickman <gnuarm@gmail.com> writes:
> Better might be a good heat sink directly on the CPU to minimize the
> self heating impact.

What about measuring the temperature and compensating in software?  That
would need a spare A/D pin and some hopefully cheap external analog part.