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Topic: connecting LEDs to an arduino without a board (Read 491 times) previous topic - next topic

Hello

I have a project I would like to complete and I would like to use a single Arduino Uno to output to 10 LEDs to blink in a timed sequence. Does anyone have any advice on how to affix LEDs through soldering or another method? Here is a photo of the LEDs I picked up.

https://www.dropbox.com/s/h6inwy8gxffsgs9/Photo%20on%2013-05-02%20at%202.04%20PM.jpg

Thanks!

DVDdoug

You don't need a board.

You can solder the LEDs directly to  header pins, or solder wires to header pins,  and solder the other end of the wires to the LEDs.

Don't forget current-limiting in series with each LED.  When I solder a resistor inline with an LED, I like to insulate the connection and entire resistor with heat shrink tubing, and I like to use clear heat-shrink just in case I forget the resistor is there in the future.   I like to insulate all "free floating" solder connections with heat-shrink, including where the wire is soldered to the header pin..

But with 10 LEDs, resistors, and ground wires, you are going to have a mess it you try to "affix" the LEDs direclty to the Arduino.    It's better if you can physically mount the LEDs to something else  (a front panel, a perfboard, or ...something).

PGT

and if you dont like to solder use a breadboard and some wires.




CrossRoads

Use a protoboard.
http://www.dipmicro.com/store/PCB-PB1
Solder the LEDs, current limit resistors and headers to bring wires over to the Arduino.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

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