I started the data logger project, because I tried to figure out if I can store my documents down in the root cellar. The humidity in this cellar varies from 75% up to 90% which is way to high for paper documents. So I plan to store the documents in a sealed box. Because I am not sure if the sealing is good enough for the environment down in the cellar, I will first place a “test box” there with the data logger inside.
There are plenty commercial data loggers available to use for this kind of task, but it is much more fun to build a own.
To test all involved components I first created a prototype on a breadboard. Then I created a minimal and simple version without display and just the sensor. The documentation for the minimal and simple version are still available on this site. After all tests were successful I built the final version with a nice case, display, capacitive keypad and wireless charging.
Table of Contents
Questions and Feedback
If you have questions of feedback about this project, feel free to leave a comment on any page or write an email.
Start with the Overview.
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