Hi RoSchmi,
It’s possible that endTransmission (where I retrieve the begin status) had no return on Wio Terminal.
Can you try if work even if the begin had no return?
You can check your wiring with the pinout diagram
[caption id="attachment_12555" align="alignnone" width="300"]
Wio Terminal pinout mischianti low resolution[/caption]
the default configuration require BCM2 (SDA) and BCM3 (SCL) pinout.
Bye Renzo
