Trạm Đo Nhiệt Độ Ngoài Trời

Nice outdoor thermometer (and humidity + pressure) station.
There is ESP-12E (ESP8266) for WiFi connection, powered by two AA batteries.
It should last long as that MCU is using sleep mode.

Case is not waterproof as it has some holes in botoom so you need to place it vertically with
that holes downwards. In that position water wil not reach sensors, MCU and batteries and it should be OK outside.

I have printed with PLA+ but more durable material will be better probably as it is placed outside.

I have printed it with dual color (transparent PLA strip in bottom part) as there is two LEDs blinking when it is awake and reading/sending data.

I have made some custom PCB and assembled with SMD parts, but you can use your own design, maybe this case will be usefull for you:)

Bambulab X1C
0.2
20 infill
PLA+ (white and transparent for LEDs to be visible through)
no supports