[SOLVED] D7 LED when using Internet Button library

Troubleshooting
1

Solution: Adding: “pinMode(D7, INPUT_PULLDOWN);” after “InternetButton.begin()” overrides that

I’ve been using the Photons for quite a while now, and I’ve noticed a perculier behaviour when using the official Internet Button library: the D7 onboard LED is locked to HIGH.
Has anyone encountered this problem and come up with a software solution?
I’ve tested every aspect of code, stripping it down to the basic elements and the problem is always present after “InternetButton.begin()” runs.

2

The reason is the pull-up resistor for one of the buttons
https://github.com/spark/shields/blob/master/photon-shields/PDFs/Schematics/internet-button-v130.pdf

1 Like
3

Well, that was a quick solution. Adding: “pinMode(D7, INPUT_PULLDOWN);” after “InternetButton.begin()” overrides that, so thank you muchly

1 Like
4

Thanks for the link @ScruffR!