Re: help needed to in getting Meggy RGB Jr. going (newbies)

Home Evil Mad Scientist Forums LED Matrix Kits help needed to in getting Meggy RGB Jr. going (newbies) Re: help needed to in getting Meggy RGB Jr. going (newbies)

#20716
Windell Oskay
Keymaster

If you managed to damage the first LED D1 when you soldered it in, you may want to be a little more gentle with your soldering– those don’t usually fail.

 

pc1

The connection of button b1 to pin PC1 is shown above.   If you’re reading 0 V on that pin, then it is likely that there’s a bad connection between the two points.  Check to see if there is actually a connection between these two points. (You can do that from the top or bottom of the board.)  
gnd
One pin of button b1 is connected to ground.  Check to see if it is actually connected, say to the pin to the left of PC0.
Then, check to see if this pin is electrically connected to the PC0 when the button is and is not pressed.