arduino sensor battery stats

no advanced sleep, led blinks, sensor report every 3s, bme280 sensor @ I2C, binary protocol over 433MHz, 1200mAh 3.7V lipo, transmit 5, measure all 3

3.7.2017

• 13:00 started, sensor reports 4.20V
• 18:10 4.12V

• 08:30 4.00V

• 4.7.2017: 09:30 4.20V
• 5.7.2017: 11:00 4.18V
• 6.7.2017: 21:30 4.14V
• 8.7.2017: 19:30 4.11V
• 11.7.2017: 07:00 4.07V
• 14.7.2017: 14:30 4.02V
• 15.7.2017: 20:30 4.00V
• 25.7.2017: 9:30 3.91V