How can I achieve the 104µA power consumption?

Official Hardware MKR Family MKR WAN 1310
15

Hi @mattb1969 ,
Could you post your code to achieve ~ 110uA please? I am consistently getting ~ 550-600uA with a MKR zero using a Current Ranger. I started with the RTC example, tried both the rtc.standbyMode() and LowPower.deepSleep() calls : same result.
I am powering the board via a LiPo 3.7 V Batt on the batt. in JS2 connector with the Current Ranger in series.

I also call :

 // detach USB so chip is asleep
  USBDevice.detach();

and :

 // Set digital pins to input  to save on current drain
 for (int i=0; i < 15; i++) 
 {
   pinMode(i, INPUT_PULLUP);
 }

#include <RTCZero.h>
#include <ArduinoLowPower.h>

/* Create an rtc object */
RTCZero rtc;

/* Change these values to set the current initial time */
const byte seconds = 0;
const byte minutes = 00;
const byte hours = 17;

/* Change these values to set the current initial date */
const byte day = 24;
const byte month = 11;
const byte year = 20;

void setup()
{
   // Set digital pins to input  to save on current drain
 for (int i=0; i < 15; i++) 
 {
   pinMode(i, INPUT_PULLUP);
 }
  
  pinMode(LED_BUILTIN, OUTPUT);
  digitalWrite(LED_BUILTIN, LOW);

  rtc.begin();

  rtc.setTime(hours, minutes, seconds);
  rtc.setDate(day, month, year);

  rtc.setAlarmTime(17, 00, 20);
  rtc.enableAlarm(rtc.MATCH_HHMMSS);

  rtc.attachInterrupt(alarmMatch);

  // detach USB so chip is asleep
  USBDevice.detach();
  rtc.standbyMode();
}

void loop()
{
  //rtc.standbyMode();    // Sleep until next alarm match
  LowPower.deepSleep();
}

void alarmMatch()
{
  digitalWrite(LED_BUILTIN, HIGH);
  USBDevice.attach();
}

Not sure why I am getting ~600uA with that. Any idea?

Thx.

L.