Hello, using sleep mode (as shown here: Gammon Forum : Electronics : Microprocessors : Power saving techniques for microprocessors Sketch J) on Pro Mini 3.3V version, I managed to achieve 10uA current consumption. However, when initializing SoftwareSerial, it consumes ~160uA in sleep. Is there any way to disable SoftwareSerial before sleep? Thanks.
Try calling the end() method of the object and then digitalWrite(RX_PIN, LOW) to disable the internal pull-up.