Dear Friends, I try blink example of Pin 13 of Arduino Uno R3 and it run fine as well with other pins for LED. When i tryed to give power through simple power regulator of LM7805 with 10K Pot in VDD adn 220ohm to GND to LED, led burns !!!. I think as per ohm's law, V= IR where V= 5 as output of 780…

Difference between Arduino 5V power and output of 7805 5V power

JimboZA January 20, 2013, 4:44pm 9

VBN, you might find this site useful

Topic		Replies	Views
Arduino Powering General Electronics	5	769	May 6, 2021
Voltage/Current output from Arduino Troubleshooting	9	16890	May 6, 2021
Correct Resistor for maximum light output on Red LED General Electronics	16	8622	May 6, 2021
What is the resistor for in the circuit for the fisrt LED example Project Guidance	25	17339	May 5, 2021
7805 voltage regulator help General Electronics	9	5147	May 6, 2021