4-20 mA to voltage converter module (HW-685) con ESP32

Alimentazione 7-36 V Bus ANALOG Misura corrente

Pin e collegamento all’ESP32

Pin	Ruolo	Pin ESP32	Note
VCC	Non collegato all’ESP32	—	External 7 to 36 V supply (e.g. 12 or 24 V). Never to the ESP32. Pin order varies
GND	Massa	GND	Connect to ESP32 GND too (common ground)
VOUT	Uscita analogica	D34	Set the span trimmer so 20 mA gives 3.3 V or less before connecting. To an ADC pin (prefer ADC1: GPIO 32 to 39)
I+	Non collegato all’ESP32	—	Current loop in, from the transmitter
I-	Non collegato all’ESP32	—	Current loop out

Collegamento consigliato per l’ESP32 DevKit a 30 pin, evitando i pin della flash, di sola lettura e di strapping. BoardPilot lo controlla mentre colleghi.

Codice di partenza (Arduino)

void setup() { Serial.begin(115200); }

void loop() {
  int mv = analogReadMilliVolts(34);  // VOUT on GPIO 34
  Serial.println(mv);
  delay(200);
}

Fonti

HW-685 seller datasheet, Supply 7 to 36 V; 0/4-20 mA in; 0-3.3 / 5 / 10 V out set by zero and span trimmers

Provalo in 3D in BoardPilot

BoardPilot Dati del componente (JSON)

Componenti simili

49E linear hall sensor (SS49E)ACS712 current sensor moduleACS723 current sensor moduleACS758 high-current sensor module (50-200 A)AD8232 ECG heart monitorCapacitive soil moisture sensor v1.2

Dati dei componenti: CC BY 4.0, riutilizzabili citando BoardPilot.