Simple battery powered APRS-IS (micro) weather station. Hardware: ESP8266 + BME280

No fancy webgui just WX data uploaded to APRS-IS server. One time configuration via serial port.

ESP-12 soldered to simple breakout board and powered from two LiFePO4 18650 1500 mAh 3,2V batteries connected in parallel (3,2V 3000mAh) without voltage regulator.

ADC voltage divider - R1 320k, R2 100K.