Dries Buytaert

Solar panel, Boston

65%
Last update: ago
Battery: 65%

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 3 min 23 sec ago
Day or night Day
Battery capacity 65%
Battery charging Charging - moderately
Charge type Boost charge
Outdoor temperature 19°C
Solar system uptime 388 days
Raspberry Pi uptime 37 days
CPU usage 9%
CPU temperature 46°C (normal)
Memory usage 44%
Disk usage 4%
WiFi strength Good
Power supply 1.26V (normal)

Hourly battery charge

August 25th August 24th August 23rd August 22nd August 21st August 20th August 19th August 18th August 17th August 16th August 15th August 14th August 13th August 12th 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% 2025-06-26 2025-07-02 2025-07-08 2025-07-14 2025-07-20 2025-07-26 2025-08-01 2025-08-07 2025-08-13 2025-08-19 2025-08-25

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.