I thought Arduinos didn&#x27;t come with Ethernet on the chip, and instead you have a Heath-Robinson addon board which you speak SPI to another microprocessor which has the TCP&#x2F;IP stack, MAC and PHY on?<p>The only thing I&#x27;ve seen that seems to really be viable for remote battery operation is the ESP2866. I have a Pi in my cupboard reading the electricity meter.<p>I really ought to learn Arduino, simply because it&#x27;s so popular.