so, i make test.
when i use the sketch : Howto --emonTx - Shield ESPEASY and WEMOS R3 UNO
i have correct voltage but the W was not correcte.
if i use a W metter i see 1500W but with my arduino i see 750W. ( i test with an electrical heater)
i put this for calibration :
if (CT1) ct1.current(1, 60.606); // Setup emonTX CT channel (ADC input,calibration)
if (CT2) ct2.current(2, 60.606); // Calibration factor = CT ratio / burden resistance
if (CT3) ct3.current(3, 60.606); // emonTx Shield Calibration factor = (100A /0.05A) / 33 Ohms
if (CT4) ct4.current(4, 60.606);
if (CT1) ct1.voltage(0, 253.755, 1.7); // New calibration = existing calibration × (correct reading ÷ emonTx reading)
if (CT2) ct2.voltage(0, 253.755, 1.7);
if (CT3) ct3.voltage(0, 253.755, 1.7);
if (CT4) ct4.voltage(0, 253.755, 1.7);
my clamp : 100A/0.05A
but i don’t understand why i don’t have the same value.
Br,
Cnopix