A few problems encountered on power-up

[NeenerNeener]

After sorting out te power issue on the I2C Hub, I plugged all the remaing sensors in and the board seems to boot properly but with a couple of errors;

1. SEN66 not found/read failed
2. RTC lost power
   Also, the SFA40 sensor isn't recognized when plugged in. snafu88 mentioned that the Grove/Stemma cable needs wire swaps but he didn't remember what the revised order is
   I have attached a couple of pics of the boot diagnostics screen if that provides any insight.
   Thank you in advance for any help you can provide.

[another-john-hale]

I had the same problem with my SEN66. It turned out to be the AliExpress cable I purchased. The ends need to be swapped to look like the attached picture. As for the "RTC lost power" message... my guess is you need to install a battery on the module

Sorry for the low-res photo. The point is that the cable connector is facing the same direction up and the pins should appear in the same order from left to right.

[NeenerNeener]

Thank you, that resolved the SEN66 issue.
I found the SFA30 uses a standard STEMMA QT to Grove cable but the pinning on the SFA40 needs the wires swapped exactly like the CO and DAC cables.
The only problem now is the RTC issue. The battery has been in place the whole time and measures a solid 3.2v DC. Thanks!