Humidity Meter Case 3

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 Typce 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 front panel for the meter and an enclosure to fit over all the electronics (old and new), but fitted from the dry box inside. The enclosure is s