EGON RELAY-HUB. Circuit Overview

[@frankmcalinden3699]

Hi Guys, Was wondering if you had any issues with popping the uln2003 chip....Unless the schematic is incorrect or your using relays with built in "back emf" diodes across the coils you may issues....

[@damodoesall6240]

This thing is awesome, but I don't understand how huge fat DC cables can suddenly run through a tiny circuit board and not be a problem?