Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
I want to power up arduino through Vin port , what should be the input voltage ?
About 7.5V to 9V is best. A 9V battery is often not capable to supply enough current for an Arduino. Do you have a multimeter to measure the battery voltage drop when the Arduino is connected ?
Required, but never shown