I just got my hands on an Arduino Uno, decided to make a clock out of it. The 4 digit 7 segment common anode display took up almost all of the io pins. I made sure to hook the resistors to each segment(220 ohms because the tutorial i followed online said to use 220 - 330 ohms) i let it run by making it display a 10 minute timer. I left it on the desk for a while and upon returning, the display almost had no segment lighting up. I pressed the reset button but there was no changes. I re pinned the wires making sure they were corrected properly and checked for faults with a multimeter. The L led built in on the board seems to be flashing (on then off but then turns on a little, then turns off before turning on again. Thoughts?
It's either a software problem or a hardware problem.
If you used Arduino pin 13 in your sketch, the LED_BUILTIN is following those instructions.
@jim-p is giving you a hint. We need much more information to be able to hep you.
Read the how to use the forum post to see what sort of info is required.
Use the IDE autoformat tool to format your code neaty.
Post the code as instructed in the how to use the forum post.
Post a detailed schematic showing how the project should be wired. Show all power supplies.
Post clear photos showing how the project is wired.
Tell us what the project actually does and how that differs from what you want.
With this info we shoud be able to get you going.
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