Just a little mount for a WeMos D1 Mini (16MB) to monitor the conditions inside a drybox.
I've also added a mounting plate for a 18650 battery-holder - 26650 might work too - as well as a script.
This will fit my drybox. Other designs will work too - you just have to drill some holes to mount it on the outside and to drive through some cables to connect a BME280.
The script reads a BME280, monitors the battery voltage, puts this data on a OLED-display and provides a simple string for the environmental-data.
You can also use it to monitor the environment inside and outside your home.
BOM:
Please note, that the WeMos D1 Mini does not have a protection against deep discharge. Only use LiPo-batteries with protection circuits.
Battery_Mount.stl | 265.9KB | |
ESP-BME280-OLED-WLAN.ino | 5.5KB | |
WemosD1MiniProV2_16MB-Mount.stl | 906.9KB |