DoMeteo - Autonomous Weather Station

This is an autonomous weather station that can also store data from any sensors. In my setup, I used a weather sensor (BME280). The board starts, sends data, and then goes to sleep for 5 minutes to save power. To optimize battery usage: A field-effect transistor connected to pin D6 cuts off power to the BME280 when the board sleeps. The 18650 lithium battery is monitored via input A0. If the battery voltage exceeds 4.2V, the D7 output disables the solar panel charging circuit to prevent overcharging.