Did RX TX really switch places between v2.5 and v2.7? The expansion board still has TX next to the 3.3v pin, which is how it is on my v2.5. But, on the v2.7, RX is listed next to the 3.3v pin.
On the 2.5 board there was a labeling error. The pin next to 3.3v is RX to the PB, TX from the sensor board. When I updated things for 2.7, I fixed the labeling error, but the pinout of the header is unchanged.
ok thanks. That’s funny, I thought it was right the first time and wrong the second, but it’s the other way around. So - transmitting (TX) from the sensor receiver (RX) on the PB.