03-09-2015, 11:51 AM
Oops! Arvid beat me to it.
Those level shifters will need pull up resistors on the collector of the transistors. Likely the microcontroller has them built in but probably need to be programmed to activate them. I'm not familiar with Arduino but have been meaning to dive into it so I'll take a look at seeing how to activate the pull up resistors on those two inputs.
Oh, and please keep this thread going. If people aren't interested in it they don't have to read it.
Ed
Those level shifters will need pull up resistors on the collector of the transistors. Likely the microcontroller has them built in but probably need to be programmed to activate them. I'm not familiar with Arduino but have been meaning to dive into it so I'll take a look at seeing how to activate the pull up resistors on those two inputs.
Oh, and please keep this thread going. If people aren't interested in it they don't have to read it.
Ed