Author Topic: How to get Arduino Mini Pro 3.3 V consumes a few amps on sleep mode?  (Read 1644 times)

AustinH

  • Newbie
  • *
  • Posts: 5
Hi all,

Could anyone please tell me how to get the sparkfun arduino mini pro 3.3 board goes to sleep at 10 micro amps or 30 micro amps or so on batteries?

On the description below, I disabled the 2 LEDs and regulator. I also used Rocket Scream sleep library in the code. However, I could not get the arduino board to sleep at a few micro amps as people claimed. Right now, it's sleeping at 220 micro amp. My goal is to get to about 10 or 30 micro amps or so. I wonder what important step that I missed in the work.

Thanks alot
A.H.

Hardware:



Programming:

Code: [Select]
// **** INCLUDES *****
#include "LowPower.h"

void setup()
{
    // No setup is required for this library
}

void loop()
{
    // Enter power down state for 8 s with ADC and BOD module disabled
    LowPower.powerDown(SLEEP_8S, ADC_OFF, BOD_OFF); 
   
    // Do something here
    // Example: Read sensor, data logging, data transmission.
}

« Last Edit: January 11, 2016, 04:30:25 PM by AustinH »

Felix

  • Administrator
  • Hero Member
  • *****
  • Posts: 5702
  • Country: us
    • LowPowerLab
Re: How to get Arduino Mini Pro 3.3 V consumes a few amps on sleep mode?
« Reply #1 on: January 11, 2016, 04:44:09 PM »
Could anyone please tell me how to get the sparkfun arduino mini pro 3.3 board goes to sleep at 10 micro amps or 30 micro amps or so on batteries?
Maybe ask Sparkfun?

Nuudeli

  • Newbie
  • *
  • Posts: 14
Re: How to get Arduino Mini Pro 3.3 V consumes a few amps on sleep mode?
« Reply #2 on: January 12, 2016, 05:32:21 AM »
Did you remove serial programmer before measuring current?

AustinH

  • Newbie
  • *
  • Posts: 5
Re: How to get Arduino Mini Pro 3.3 V consumes a few amps on sleep mode?
« Reply #3 on: January 12, 2016, 06:42:07 AM »
Nuudeli,

Yes, I did remove the serial programmer (adapter) before measuring.
I measured current between Gnd and Raw pins. A standalone Arduino unit consumes 95 micro amps while on sleep. The goal is to make it to about 10 or a little above.
I tried with different coding methods for a deeper sleep. However, I could not lower the current. I think the hardware needs some more work beside removing LEDs and regulator. I don't know how yet.

Thanks
A.H.