I am new to the arduino forums and the arduino platform its self. I have knowledge of electronics just not to much with micro controllers themselves. Im currently working on a project with a 33 quantity 12v pump array and need to run them off an array of 33 relays. Just wondering what would be the best route in controlling the relays. Im trying to limit the amount of i/o's on the board because i need a couple others for other components. So iv been trying to figure out a way to run all these maybe off a data line that will run into another IC that has a large amount of outputs? Did some searching around and couldn't find anything. So if anyone can help me out or point me in the right direction would be awesome.
Also as a side note, only one pump will be running at a time. I don't need to be running multiple pumps at the same time but they all need to be able to be controlled separately.
Thank you guys!!