ESP8266 Community Forum

- Thu Feb 02, 2017 2:54 pm #61924 Hi
I just got my NodeMCU and tried to get an Arduino sketch i have to run on it
Im using SHT71 temperature & humidity sensor that is working fine on my Arduino Pro mini (Leonardo)

I'm using same pin layout and get all zeros in NudeMCU

any ideas ?


this is the code, simple from their example

#include <Sensirion.h>
// library from https://github.com/spease/Sensirion

const uint8_t dataPin = 4;
const uint8_t clockPin = 5;

float temperature;
float humidity;
float dewpoint;

Sensirion tempSensor = Sensirion(dataPin, clockPin);

void setup()
{
Serial.begin(9600);
}

void loop()
{
tempSensor.measure(&temperature, &humidity, &dewpoint);
Serial.print("Temperature: ");
Serial.print(temperature);
Serial.print(" C, Humidity: ");
Serial.println(humidity);
// Serial.print(" %, Dewpoint: ");
// Serial.print(dewpoint);
// Serial.println(" C");
delay(2000);
}

Thanks,

- Fri Feb 03, 2017 12:32 am #61944 See the section on pin mapping that applies to NodeMCU boards 0.9 and 1.0.

http://esp8266.github.io/Arduino/versio ... odemcu-0-9

- Fri Feb 03, 2017 1:37 am #61947 Thamks for the suggestion, already seen this mapping and confirmed the pins im using with Blink sketch

See the section on pin mapping that applies to NodeMCU boards 0.9 and 1.0.

http://esp8266.github.io/Arduino/versio ... odemcu-0-9

any other idea ?

- Fri Feb 03, 2017 2:13 am #61950 Oh, stupid me... I see now, I tried calling them with the PIN number.. changed it to D1/D2 and it didnt work there so I moved to D3/D4 PINs and it work there (not sure with the others did not ..)

//const uint8_t dataPin = 4;
//const uint8_t clockPin = 5;

Sensirion tempSensor = Sensirion(D3, D4);

Thanks !

See the section on pin mapping that applies to NodeMCU boards 0.9 and 1.0.

http://esp8266.github.io/Arduino/versio ... odemcu-0-9