Multichannel Gas Sensor with MKR1000

Products & Technology Grove
#1

I’ve two Multichannel Gas Sensor and no one talk with MKR1000.

First guess is oriented to the I2C voltage level of the MKR that’s 3.3V so I’ve tried with a Seeeduino 4.2: first a 5V and all was good, then I switched at 3.3V and tried again… the Gas Sensor still works! So… why works a 3.3V with Seeeduino and won’t work a 3.3V with MKR?

#2

Hi there,



the issue shall be related with getVersion() function. please try below 2 actions. thanks.


  1. add the while after Serial.begin



    Serial.begin(115200); // start for output

    while(!SerialUSB){



    }


  2. please modify the cpp file



    void MutichannelGasSensor::begin(int address)

    {

    __version = 2; // version 1/2

    r0_inited = false;



    Wire.begin();

    i2cAddress = address;

    //__version = getVersion();

    }



    unsigned char MutichannelGasSensor::getVersion()

    {

    return 2;

    }
#3

Point 1: already present on my sketch.

Point 2: modified the cpp as your direction but with NO LUCK… now I pass the initialization of the sensor but it freeze when I try to read a measure (note that the sensor work also with WIO node).