22/08/2025 5:12 am
Topic starter
Notifications
Clear all
0
Is it possible to power an Arduino project directly from a solar panel without using a battery?
I’m concerned about voltage fluctuations and whether the Arduino can handle them, or if additional components are required to make it work safely.
1 Answer
0
23/08/2025 5:12 am
Yes, it’s possible to power an Arduino directly from a solar panel, but not reliably without extra components. A solar panel’s voltage and current fluctuate with sunlight, which can cause the Arduino to reset or even get damaged.
To make it work safely, you’ll need at least a regulator (buck or buck-boost) to keep the voltage stable, a blocking diode to prevent reverse current at night, and some capacitors or a supercapacitor to smooth out short drops in power.
Without a battery, the project may still cut off under clouds or low light, so if continuous operation is required, even a small buffer battery or supercap is highly recommended.
