Arduino Giga and Qwiic Jumpers

Sensors
1

With the code below, the only thing printing is “Did not begin”. I tested two temperature sensors with the ESP32 Pro Micro which works, but when I try to connect to Arduino Giga boards using Qwiic jumpers they don’t work. I tested with two Gigas and two jumper cables. Any guidance would be greatly appreciated.

#include <Wire.h>
#include "SparkFun_STTS22H.h"

SparkFun_STTS22H mySTTS; 

float temp; 

void setup() {
  delay(5000);
  
  Serial.begin(115200);

  if( !mySTTS.begin() )
	{
		Serial.println("Did not begin.");
		while(1);
	}

  mySTTS.setDataRate(STTS22H_POWER_DOWN);
	delay(10);
	mySTTS.setDataRate(STTS22H_1Hz);

	mySTTS.enableAutoIncrement();
}

void loop() {
  mySTTS.getTemperatureF(&temp);

    Serial.print("Temp: "); 
		Serial.print(temp);
		Serial.println("F"); 

}
2

You are missing ‘Wire.begin();’ in setup

3

Thank you, however it is still not working.

4

you need to provide a bit more information for help.
Try an I2C scanner : Arduino Playground - I2cScanner to see whether it gets detected.
Else how did you connect ?

5

I’m testing on two Arduino Gigas, three sensors (two different kinds), and two different jumper cables. Connections are:

Yellow: SCL
Blue: SDA
Red: 3.3V
Black: GND

Using the scanner it prints “No I2C devices found”.

Please let me know if you need any more information.

6

What pin numbers are you connecting the yellow and blue wires too?

7

Upon reading that I realized there are multiple SCL/SDA pins on the Giga. I got it working, thank you.

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