I have a Ublox M8N module (prod. ref. 0880B07) and want to connect it to my Wemos D1 mini microcontroller, using the Tx and Rx pins. This is how the module is connected:
Tx -> Rx
Rx - > Tx
5V -> 3V3
GND -> GND
The module receives power, as the blue led is on, but I don’t receive any data via the serial interface. Do you have any idea what might be wrong ?