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joeycastillo / Sensor-Watch

A board replacement for the classic Casio F-91W wristwatch
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Sensor-Watch Lite temperature offset #331

Open drtrigon opened 10 months ago

drtrigon commented 10 months ago

Dear Sensor-Watch Makers

Thanks for this nice and clever product. I quite like it!

While using it as a thermometer I found that the temperature reported is about +1°C compared to other thermometers placed close to it.

Is there a easy way e.g. using preferences to calibrate respective set the temperature offset such that it shows the correct temperature?

Thanks and Greetings

bricewge commented 10 months ago

I can confirm, the sensor watch lite report higher temperature than the actual temperature even after leaving it away of a wrist for some time.

If some settings have to be adjusted, it's probably these: https://github.com/joeycastillo/Sensor-Watch/blob/1b90a4a07a591c6f074eacb0f0dae9cabc7e0f90/watch-library/shared/driver/thermistor_driver.h#L34C27-L37

BrianBinFL commented 9 months ago

I can confirm, the sensor watch lite report higher temperature than the actual temperature even after leaving it away of a wrist for some time.

Of course there will be some delay for the temperature of the sensor inside the watch to rise and fall in response to changes in the environmental temperature and/or the presence or absence of a warm wrist. But I have generally found the watches to respond rather quickly to on/off wrist - likely due to the fact that the watches aren't very thick and the case back is metal.

I have two watches in a laboratory incubator for some rate experiments and keep the "thermistor face" active on them. The temperature shown on the watches is generally within about 0.4 degrees Celsius of the temperature the incubator is set to, and of course some of that will be variances in the actual temperature as the incubator works to keep it constant.