Solar panel · Boston

Offline

Last seen 39 min ago

I have a solar-powered website at solar.dri.es (mirror). It runs on a Raspberry Pi with a solar panel on our roof deck.

Every 10 minutes, the Raspberry Pi updates this status page. This page is hosted separately, so if my solar-powered website goes offline due to an extended lack of sunlight, cold preventing the battery from recharging, or a system crash, you should be able to see that here.

Battery
99%
Day or night
Day
Charging
Charging - very slowly
WiFi
Good
Solar system uptime
193 days
Raspberry Pi uptime
0 days
More details
Charge stage
Float charge
Battery voltage
13.5 V
Battery current
-0.07 A
Battery cutoff voltage
11.2 V
Battery restart voltage
12 V
Power supply
1.26V (normal)
CPU usage
9%
Memory usage
64%
Disk usage
3%
CPU temperature
45°C (normal)
Outdoor temperature
16°C

Hourly battery charge

Each row is a day and each square is an hour. The deeper the red, the lower the charge; grey means the Raspberry Pi was offline.

LowFullOffline
Battery capacity by hour Nov 5 Nov 4 Nov 3 Nov 2 Nov 1 Oct 31 Oct 30 Oct 29 Oct 28 Oct 27 Oct 26 Oct 25 Oct 24 Oct 23 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

Daily battery levels

Each day's highest and lowest charge. It helps track trends and the risk of the Raspberry Pi shutting down from insufficient sunlight or extreme cold.

Daily highDaily lowDanger zone
Battery high and low by day 0% 20% 40% 60% 80% 100% Sep 6 Sep 18 Sep 30 Oct 12 Oct 24 Nov 4