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<div class="moz-cite-prefix">Are you trying to use it to measure
atmospheric temperatures? It was designed to measure chip
temperature, to help you program a shutdown or minimizing sequence
before the magic smoke comes out. At work last year we used it to
activate a peizo cooling element as needed, but minimized
activation for longer battery life. We always used an external
sensor for environmental conditions.<br>
<br>
On 01/27/2014 04:18 PM, Pete Soper wrote:<br>
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<blockquote cite="mid:52E6CD2D.8030403@soper.us" type="cite">The
internal sensor in the ATTiny84A stinks without calibration. What
I can't find in the datasheet (section 16.2) is how good it can
get with additional calibration points. Would it be reasonable to
expect to make it accurate to +/- two degrees C across a 0 to 70
degree range if I can calibrate it across the full range and
refine the slope measurement or is the linearity likely to be too
poor?
<br>
<br>
-Pete
<br>
<br>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="80">--
Scott G. Hall
Raleigh, NC, USA
<a class="moz-txt-link-abbreviated" href="mailto:ScottGHall1@GMail.Com">ScottGHall1@GMail.Com</a>
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