Adafruit QT Py ESP32-S2 and MCP4725

[CodeHax23]

Hey, Im using the Adafruit QT Py ESP32-S2 and MCP4725 but Im having problems getting the output voltage to change, Im using the default triangle wave sketch but i keep getting a constant 1.6V output. I have the two modules attached using the STEMMA QT connectors. I have attached a picture of the code and wire setup.
Note: I added the VL53L4CX cause i want to take the value from the VL53L4CX and output a voltage using theMCP4725.

Thank you for your help.

[dastels]

How are you measuring the output voltage?

Dave

[CodeHax23]

Im using a multimeter and a oscilloscope.

[dastels]

The multimeter isn't of much use here IMO, it'll average the signal. What do you see on the 'scope? A flat lime?

Dave

[CodeHax23]

Yeah, I see a flat line of ~1.6V. Ive tried changing the values a bit where instead of 0-5V its 0-3V but i still get the same result.
I used an I2C checker program and i can see that I have two modules 0x62 (DAC) and 0x29 (TOF).

[dastels]

Any different if you add a delay in your loops to lower the frequency of the waveform?

Dave

[CodeHax23]

It still does the same thing where it stays around ~1.6V straight line even with the delays.

[dastels]

You're using the STEMMA-QT connector? Try using Wire1 instead of the default Wire since it's the secondary I2C bus. See https://learn.adafruit.com/adafruit-qt- ... or-3107922.

Dave

[CodeHax23]

Yes im using the STEMMA-QT connecton. after looking into the code for the triangle there was no reference of the wire command. so I looked into the Adafruit_MCP4725.h file and changed the &wire to &wire1 (see picure)

[dastels]

You're better off passing it as the second argument to the begin method, rather than changing the library. If you update, your change will be lost.

Dave