adafruit industries

New update:

Everything seemed to work fine with the voltage divider. At least it did for about 40 hours of testing.

Now I don't get anything to work, which is quite surprising. Still bumping for info about the leds and signal between them + other questions.

adafruit_support_mike wrote:An Arduino GPIO pin can deliver up to 40mA @ 5v. Its effective output impedance is about 125 ohms.

... (Cropped) ..

I think that was the most amazing support reply I've ever read. The entire text was awesome.

[edit] add note about entire msg