So I'm starting the project of hooking up my DIY LEDs to be controlled by the Apex. My current plan is the variable speed port (0-10v) to a little voltage divider (now 0-5v) to the analog pins on the arduino which can now read it (0-1023 integer value) then divide that by 4 (0-255ish integer value) then out put a PWM signal to the LDD drivers for dimming.
My concerns are that since the Arduino is being powered by a cell phone charger so they won't share a common ground. I had issues with my current set up in that the LDDs and the Arduino did not share a common ground and so there was significant weirdness. I have the ground of the Arduino just jumped to the ground of the LDD board and this fixed my issues. I'm not as sure how to tie the grounds together being that the apex is a sealed computer type device and not just bare electronics. Would I be able to fix this by running the cell phone charger off of one of my EB8 outlets?
Secondly according to another post that never updated here https://forum.neptunesystems.com/sho...=common+ground, using just this simple voltage divider set up and had problems with reading more than one of the variable speed outputs. Is this a common problem, and if so how might I resolve this issue?
Thanks!
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