Go Down

Topic: Beginner question: Arduino & External Power Supply (Read 2 times) previous topic - next topic

CrossRoads

Supplying power to both the Arduino and the LED "path" using the same wallwart:
Just split the power supply, one line to the Arduino and the other the LED path.
Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

peej


Supplying power to both the Arduino and the LED "path" using the same wallwart:
Just split the power supply, one line to the Arduino and the other the LED path.


Okay, great.  And in the future I'll refrain from asking silly questions without trying them out first.

Thanks again!

CrossRoads

Doesn't hurt to ask. Little time to ask & confirm beats smoking something & losing a lot of time getting replacement parts.
Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

peej


Doesn't hurt to ask. Little time to ask & confirm beats smoking something & losing a lot of time getting replacement parts.


Cheers :)

bibre


Quote
Yes, like the third circuit, except the resistor is outside of the group of LEDs (i.e. the resistor is in series with the group of parallel LEDs).


Don't you think you should have one resistor in series for EACH LED? One resistor for several LED's in parallel is not generally a good idea. :)
Billy     http://www.z-world.com/operations/gbremer/

When you've eliminated the impossible,
whatever remains, however improbable, must be

Go Up