u/3geETR

Hello, I’m planning to build a PCB using the Nrf52840 Pro Micro and E22-400M22S, but I haven’t figured out how to connect the E22. Should I connect it to DIO2, or should I connect the RX TX instead? I can’t find any clear instructions anywhere. The connection diagrams show DIO2 and DIO3, but there are no corresponding pins on the NRF side. Also, it says there’s no TXCO in the diagram, but there is.