Can someone explain how to wire this board up to the domino:
My current attempts seem to have failed with hooking up the 3.3-IN to 3.3 and GND and RX/TX, it says at most all I need is four wires?!
Also triedd VDD/VBATT but that doesn’t seem to work either. I’m connecting the TX/RX to COM1 and attempting to read from that.