Quick update. I was able to get the readings into HA. I found out i can just skip the arduino all together and use the ESP. I searched for "EZO" in the esphome.io website.

Hi All,

Happy new year!

I too am having these issues I cant seem to get the Arduino to transmit via the esp into HA. I would be willing to get on a discord or even a zoom call and collaborate with anyone who wants to and update our progress here so everyone can follow.