Ultimate GPS current in sleep mode

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inshallah573
 
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Ultimate GPS current in sleep mode

Post by inshallah573 »

Hi,

Can anyone tell me what current to expect to be drawn from the Ultimate GPS module in sleep mode? I'm using both the breakout and the standalone module. When I issue the sleep command $PMTK161,0*28<CR><LF>, I'm reading between 1 and 2 mA. I think this is quite a lot! Is that what is expected? Any way of getting it lower? Was hoping for a few uA.

Many thanks,
David

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adafruit_support_rick
 
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Re: Ultimate GPS current in sleep mode

Post by adafruit_support_rick »

The datasheet doesn't call out standby current, so I don't know what's expected.

If you power the GPS from a digital output pin, you can turn it off entirely.

You might also want to have a look at this thread. The OP uses Periodic Mode to sleep the GPS. The Arduino sleeps while the GPS sleeps. When the GPS wakes up, it wakes the Arduino.

http://forums.adafruit.com/viewtopic.ph ... it=+turtle

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