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Topic: My Arduino Kit WTF Moment (Read 2 times) previous topic - next topic

modeller

My Arduino Kit WTF Moment

I got my kit from Adafruit today. After a short nap I opened the box and proceed to install it on the Windoze PC running Win 7, I had no problems at all. So far so good.

Everything looked fine, so I first wanted to light up an LED on the breadboard straight from the power supply and ground pins on the Arduino - no program. The kit came with about 50 hookup wires of varying colors, so I grabbed a red and black wire and an LED and resistor and hooked it up.

The LED did not light. Man is this going to be that hard? This is brand new ... Bad LED? Bad resistor?

I fiddled with the wires for a bit but it wasn't going to work. I then tried to measure 5V directly at the wire ends at the breadboard side and got zilch. I checked the continuity of each wire and found the red one was open.

Keep in mind this was the FIRST wire I grabbed out of 50 ...

I cut the rubber coverings off both ends and I saw copper strands going to the crimp connector at each end. It looked OK, except it was an open. Are you kidding me? The wire is OPEN in the middle?

I got a new wire and got my LED to light up, and then downloaded the hello world (blink) program, hooked it up to Pin 13, and all is well.

This goes to show you, if you aren't careful, something complex can be torn down with a small issue. If I had gone straight to the program with that red wire I'd have been led astray in who knows how many directions when all that was wrong was something very simple..

James C4S

If you aren't using that LED with a current limiting resistor you are going to burn out the I/O pin AND the LED...
Capacitor Expert By Day, Enginerd by night.  ||  Personal Blog: www.baldengineer.com  || Electronics Tutorials for Beginners:  www.addohms.com

modeller


If you aren't using that LED with a current limiting resistor you are going to burn out the I/O pin AND the LED...


James, I know all about LEDS, you just skimmed my post too fast -

... so I grabbed a red and black wire and an LED and resistor and hooked it up.



James C4S

Touché.  I stopped reading carefully after the childish "Windoze" comment.
Capacitor Expert By Day, Enginerd by night.  ||  Personal Blog: www.baldengineer.com  || Electronics Tutorials for Beginners:  www.addohms.com

modeller


Touché.  I stopped reading carefully after the childish "Windoze" comment.


Whatddya mean - it's an official entry in the Urban Dictionary!  :)

Windoze

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