I purchased an i2c relay board (DockerPi 4 CHannel Relay) that I hoped to use with my RPI running Venus OS to control some DC circuits based on temperature, battery voltage, etc. When I bought it, I wasn't aware of the differences between controlling the relays with i2c vs the GPIO pins (still not really clear on it). I see many instructions for installing extra relays that are controlled via node red etc by mapping the GPIO pins but not really anything on an i2c controlled relay board.
Is it possible (for an average diy enthusiast) to use this board in the manner I am desiring, or should I just look for a different GPIO relay board that others have already used to make this work?
TIA