<Usual disclaimer about being an Arduino-noobie/software guy - not a hardware tech>
I am working on getting the basic HelloWorld/Arduino version (Blinking LED) working with my new board (that I bought from Sparkfun).
I can download the program etc and get the LED to blink - but the problem is that the light from the LED is extremely faint.
I am using a 220 Ohm resistor - like I have read. I am using output pin 13. I am using the LED blink program from the Arduino examples. I tried two different LEDs with the same results.
I am powering my board with my USB cable.
By way of troubleshooting – I hooked the positive side of the LED up to the 5V pin on the board - and the LED came on very brightly - like I was expecting.
Would pin 13 just not be providing enough current? I need the 220 Ohm resistor – right?
The LED does come on/blink just like it should but it is just barely glowing.
Any pointers/debugging tips appreciated.