Humidity Meter Case 2

I wanted a reasonably accurate humidity meter for my dry box. Since I'm starting to use nylon, the humidity readings needed to measure really low humidity levels. The UNI-T333BT meter meets my requirements. It can measure humidity levels down to 0%; impressive!

The UNI-T meter comes in a case that was unsuitable to mount on my dry box. In addition, I wanted the meter to display a reading all the time. The meter includes remote Bluetooth monitoring capabilities, too.

All this metering capability meant a higher capacity battery. Whilst I'm at it, I included a battery charging circuit with a USB Type C charging port. The bigger battery gives the meter the ability to remain continuously on for months between charges.

The requirements translated into the need for a bigger enclosure to house the revisions. I designed a custom 3D enclosure to fit the meter guts and the new electronics.

The revised meter box is intended to be stuck to the side of my dry box with double si