First steps with emonESP

You need to connect UART Tx from your sensor to UART Rx on the ESP. See our example connecting emonTx V3 to ESP:

There is examples of how to serial print serial:strings in the latest emonTx and EmonTH code e.g.:

    Serial.print("ct1:"); Serial.print(emontx.power1);
    Serial.print(",ct2:"); Serial.print(emontx.power2);
    Serial.print(",ct3:"); Serial.print(emontx.power3);
    Serial.print(",ct4:"); Serial.print(emontx.power4);
    Serial.print(",vrms:"); Serial.print(emontx.Vrms);
    Serial.print(",pulse:"); Serial.print(emontx.pulseCount);