I am trying to use the freshly bought sensor running the full example from docs ( Shtc3 - Measuring temperature and humidity (examples) | Soldered Documentation ) on a fresh arduino R4 Wifi connected via qwiic. VCC + GND voltage measuring yields 3.3V.
but running the linked code, it returns only
Hum: 0.00
Temp: -45.00
is the sensor broken?
thank you for your help,
tee
Maybe it is connected to this problem: Qwiik plug arduino r4 doesnt find any sensor - #2 by van_der_decken - Networking, Protocols, and Devices - Arduino Forum
it says that arduino uno r4 wifi needs Wire1-Library to use qwiic correctly.
Any hints how to get the soldered-lib for SHTC3 working with Wire1?
Hello tee,
The Wire1 object can be forwarded to the shtc3 constructor, which then uses said i2c interface, here is an example of its usage for a simple read:
#include "SHTC3-SOLDERED.h"
SHTC3 shtcSensor(Wire1);
void setup()
{
shtcSensor.begin(); //Initialize sensor
Serial.begin(115200); //Start serial communication with PC using 115200 baudrate
}
void loop()
{
shtcSensor.sample(); //Initialize sensor
// For temperature use function readTempC
Serial.print("Temp: ");
Serial.println(shtcSensor.readTempC(), 2); //Get temperature and print
// For geting humidity use function readHumidity
Serial.print("Hum: ");
Serial.println(shtcSensor.readHumidity(), 2); //Get humidity and print
delay(5000);
}
Thank you @JosipKuci !
With one line more (Wire1 has to be started) it is now working 
Full working example:
#include "SHTC3-SOLDERED.h"
SHTC3 shtcSensor(Wire1);
void setup()
{
Wire1.begin();
shtcSensor.begin(); //Initialize sensor
Serial.begin(115200); //Start serial communication with PC using 115200 baudrate
}
void loop()
{
shtcSensor.sample(); //Initialize sensor
// For temperature use function readTempC
Serial.print("Temp: ");
Serial.println(shtcSensor.readTempC(), 2); //Get temperature and print
// For geting humidity use function readHumidity
Serial.print("Hum: ");
Serial.println(shtcSensor.readHumidity(), 2); //Get humidity and print
delay(5000);
}