I purchased a Arduino Generic kit last week and I need to check the displays to make sure they work. I found a youtube video of a person testing the 4 digit 7 segment so I am pretty sure that one works, but can't get the pins (a,b,c,d,..etc...) to light up on the single digit one or the 8 x 8 matrix. I need to at least know they work so I can contact the seller of the kit! By the way, also the LCD display!
So far the actual generic Arduino seems to work just fine on every project I have tried. Except for any 4 digit 7 segment, single digit, or 8x8 matrix tutorials, or LCD. I can not get any of these tutorials to work for some reason! Might only be because I am a newbie!
Hi. We have not provided any help as far as I know. Did you have a question, or did you just feel like venting your frustration?
If you are asking for help, you must be more specific and give full details of what you have tried, including sketch and schematics or clear pictures. Also describe what exactly happens (don't just say "it didn't work").
The quickest way to test the led displays is to not use the Arduino at all except for providing power. Just put the display on a breadboard, connect up +5V and 0V, a couple of wires and a resistor (anything around 200R). Probe the various pins until you have seen every led light up.
The LCD is a little trickier to test... give us a link to or pictures of the unit you have and describe what you tried so far.