Dries Buytaert

Solar panel, Boston

64%
Last update: ago
Battery: 64%

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.

Metric Status
Last update 7 min 55 sec ago
Day or night Night
Battery capacity 64%
Battery charging Not charging - no sunlight
Charge type Not charging
Outdoor temperature 17°C
Solar system uptime 368 days
Raspberry Pi uptime 16 days
CPU usage 9%
CPU temperature 46°C (normal)
Memory usage 45%
Disk usage 4%
WiFi strength Good
Power supply 1.26V (normal)

Hourly battery charge

August 4th August 3rd August 2nd August 1st July 31st July 30th July 29th July 28th July 27th July 26th July 25th July 24th July 23rd July 22nd 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

A green square means the battery is well-charged and can power the Raspberry Pi for several days. A red square indicates the battery charge is low and requires solar charging soon. A grey square means the Raspberry Pi was offline.

Daily battery levels

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 2025-06-05 2025-06-11 2025-06-17 2025-06-23 2025-06-29 2025-07-05 2025-07-11 2025-07-17 2025-07-23 2025-07-29 2025-08-04

This graph displays the battery's highest (green solid line) and lowest (red dotted line) charge levels each day. It helps track trends and assess the risk of the Raspberry Pi shutting down due to insufficient sunlight or extreme temperatures, which prevent the battery from charging.