Hi
i have been working with some external boards on my arduino UNO. My issue here is that i get different results with the gnd port than with a digital pin set to LOW. I need to be able to digitally control a ground signal to turn it on and off at will.
Thanks for your time!
It´s kind of hard o explain, but it has something to do with small motors. The thing here is that if i use the ground pin form de arduino, it works, but it wont do it with a digital out. I don´t really unsderstan whyy, my multimiter says that the digital LOW and the gnd are connected, but i still get different results... Thanks for your time!
How much current are you trying to push into the digital output when you set it to LOW?
yeah, it looks it´s way too much current for a digital pin. The digital wont do it by using 70mA, while the direct ground does it, but uses 123mA. Do you guys see how can i manipulate an out for the ground?? Thanks again for your time.
C MAMO. Ok, i`ll do that. Thanks a lot.
Would a high side driver (https://www.es.co.th/Schemetic/PDF/UDN2981-2.PDF) suit your needs?