Quantity   Component name
1 × Arduino Nano v3 (clone can be used)
1 × BME280 Pressure, Temp and Humidity (I2C)
1 × DS1307 RTC (I2C)
1 × OLED 128x64 (I2C)
1 × LiPo Battery 3.7v
1 × Lithium Battery Charger Module
1 × Perfboard
1 × Wire
1 × Solder
1 × On/Off Switch