HTCC-AB02S and VEML6075 I²C-Sensor

#1

Hi Folks.

I am desperately trying to get the UV sensor VEML6075 running via I²C on the HTCC-AB02S. However without success.

I have already tried the following things:

  • Sensor tested on an ESP8266 --> i.o.! Sensor is recognized by an I²C scanner and can be read out.

  • Sensor connected to I²C 1 (default) or 2 (with wire1.begin etc.) of the HTCC-AB02S --> is not recognized by the I²C scanner. No data can be read out.

  • Tested different versions of the CubeCell framework (1.2.0 … 1.5.0) --> no success

  • Other sensors (e.g. BME280) are recognized by the I²C scanner on the HTC-AB02S. At the I²C interface 1 or also at the I²C interface 2.

  • It can’t be caused by pull-up resistors either. I have already measured this. Also not at the 3V3 power supply. This also fits.

What else can I try in your opinion? I’m afraid it’s the wire library of CubeCell…

Many greetings
Martin

#2

I am having similar problems.
One issue for you might be to check to see whether wire1 or just wire is the default

#3

I am absolutely sure which i2c port is the correct one in each case. That can’t be the problem.

#4

You could run an i2c scan to check if the sensor can be seen.
Achim