I'm working on an LED lighting project that uses several sets (3-6) of 4 LEDs each in series. In the past, I've used ULN2004a arrays to great effect, but each line needed to behave independently. For this project however, all the aforementioned sets of LEDs are either on or off.
My question is, can I use a single signal pin on MCU like an Atmega328 to drive multiple inputs on a ULN2004a? The fewer pins I use on the MCU, the better. I can't see anything on the datasheet that stands out to me as a no-go, but I've never been too good with the nuances of transistors.
Thanks!
My question is, can I use a single signal pin on MCU like an Atmega328 to drive multiple inputs on a ULN2004a? The fewer pins I use on the MCU, the better. I can't see anything on the datasheet that stands out to me as a no-go, but I've never been too good with the nuances of transistors.
Thanks!