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‘No-Parts’ temperature measurement with Arduino Pro Mini

Posted on Monday, July 8th, 2019 in sensors by DP

1 sec WDT interval timed with micros() vs si7051 reference temperature, to determine temperature variation of the RC based timer vs the crystal based timer, as a function of temperature

From the comments on our ESP8266 temperature logger post, Edward Mallon  writes:

The ESP8266 has a hardware watchdog timer, so you could probably use that to measure temperature to much better resolution that you’d get from a DS18B20. We get better than 0.003C using the technique with cheap Pro Mini Clones
Ooops, I missed an important aspect of the two clock method – the inter-reading jitter in the micros() reads brings the resolution down to DS18b20 levels.

More details on Underwater Arduino Data Loggers blog.

This entry was posted on Monday, July 8th, 2019 at 2:47 pm and is filed under sensors. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

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