The Arduino Uno's recommended input voltage is 7-12V. However, it can operate with an input voltage range of 6-20V, although using voltages outside the recommended range may lead to issues.
Here's a breakdown:
-
Recommended Input Voltage: 7-12V - This range ensures the Arduino Uno operates optimally. The onboard voltage regulator efficiently converts this input voltage to the 5V needed for the microcontroller and other components.
-
Input Voltage Limits: 6-20V - The Arduino Uno can technically function within this wider range. However:
- Below 7V: The 5V regulator might not provide a stable 5V output, leading to unreliable operation.
- Above 12V: The voltage regulator has to dissipate more heat, potentially leading to overheating and damage, especially under heavy load or prolonged use. It is not recommended to exceed 12V.
Input Voltage Considerations:
| Voltage Range | Effect |
|---|---|
| 6-7V | May result in unstable 5V operation. Not recommended. |
| 7-12V | Recommended for optimal and reliable performance. |
| 12-20V | Possible, but can cause the voltage regulator to overheat. Not recommended for extended use or high current applications. |
It's generally best to stick to the recommended 7-12V range to ensure the longevity and reliable operation of your Arduino Uno.
