I just wanted to play around with a dot matrix display with a HT1632C Chip. Cabeling shoud be pretty easy .. I connected everything like here--> http://scuola.arduino.cc/lesson/d37dc9b/Interfacing_Arduino_UNO_with_SURE_electronics_LED_Dot_Matrix
The thing that I did differently though is that I connected the display directly to the arduino. From what I read that should be working too. I saw some setups on youtube where there was no external power supply either.
The problem is that when I connect the dot matrix board to GND and 5V of the arduino, the arduino poweres off until I remove either GND or 5V. I tried it with 2 different Arduinos so the board doesn't seem to be the issue here.
When that didn't work I also tried a 9V/5A power supply that I connected to the Arduino to supply more current...no effect.
Does anybody have an Idea what the problem could be?
Here are some pictures of my hardware/setup:
thanks in advance