@n8o Let's begin with the previous troubleshooting questions:
- Have you double-checked your hardware connections? Can you send me a few pictures so that I can verify it?
- How far have you gotten in the assembly instructions?
- Is there a step you are running into an issue at?
- Is that why you are trying to verify that the I2C devices are working?
- Which step is that?
- Can you resend the response for the following command (with the devices plugged in)? (Please, make sure to use the "-r" flag.)
- What happens when you only have the OLED screen attached?
As a follow up to your last post:
- Which wire are you disconnecting?