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Power Consumption

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    New: Includes Raspberry Pi 2 B

    Configuration Current (Amps)
    @ 12.5V
    Watts Amp Hours per Day
    @ 12.5V
           
    Beaglebone Black + USB Hub + PPS-GPS (no funcubedongles or microphones) 0.23 2.88 5.52
    Beaglebone Black + NO USB Hub + NO-GPS + 1 x fcd ProPlus (original firmware) 0.20 2.50 4.80
    Beaglebone Black + NO USB Hub + NO-GPS + 1 x fcd ProPlus (new 96 kHz firmware) 0.19 2.38 4.56
    Beaglebone Black + NO USB Hub + NO-GPS + 1 x fcd ProPlus (new 48 kHz firmware) 0.19 2.38 4.56
    Beaglebone Black + USB Hub + PPS-GPS + 1 x fcd ProPlus (original firmware) 0.33 4.12 7.92
    Beaglebone Black + USB Hub + PPS-GPS + 2 x fcd ProPlus (original firmware) 0.42 5.25 10.08
    Beaglebone Black + USB Hub + PPS-GPS + 3 x fcd ProPlus (original firmware) 0.51 6.38 12.24
    Beaglebone Black + USB Hub + PPS-GPS + 1 x fcd ProPlus (new 96 kHz firmware) 0.29 3.62 6.96
    Beaglebone Black + USB Hub + PPS-GPS + 2 x fcd ProPlus (new 96 kHz firmware) 0.40 5.00 9.60
    Beaglebone Black + USB Hub + PPS-GPS + 3 x fcd ProPlus (new 96 kHz firmware) 0.50 6.25 12.00
    Beaglebone Black + USB Hub + PPS-GPS + 1 x fcd ProPlus (new 48 kHz firmware) 0.33 4.12 7.92
    Beaglebone Black + USB Hub + PPS-GPS + 2 x fcd ProPlus (new 48 kHz firmware) 0.42 5.25 10.08
    Beaglebone Black + USB Hub + PPS-GPS + 3 x fcd ProPlus (new 48 kHz firmware) 0.51 6.38 12.24
    Beaglebone Black + USB Hub + PPS-GPS + 4(*) x fcd ProPlus (new 48 kHz firmware) 0.60 7.50 14.40
    Beaglebone Black + USB Hub + PPS-GPS + 5(*) x fcd ProPlus (new 48 kHz firmware) 0.69 8.62 16.56
    Beaglebone Black + USB Hub + PPS-GPS + 6(*) x fcd ProPlus (new 48 kHz firmware) 0.78 9.75 18.72
    Raspberry Pi 2 B + PPS-GPS + 1(*) x fcd ProPlus (new 48 kHz firmware) 0.29 3.63 7.0
    Raspberry Pi 2 B + PPS-GPS + 2(*) x fcd ProPlus (new 48 kHz firmware) 0.37 4.63 8.9
    Raspberry Pi 2 B + PPS-GPS + 3(*) x fcd ProPlus (new 48 kHz firmware) 0.46 5.75 11.0
    Raspberry Pi 2 B + PPS-GPS + 4(*) x fcd ProPlus (new 48 kHz firmware) 0.55 6.88 13.2

    Notes:

    • (*) in order to use more than 3 fcd ProPlus, you must update the firmware on all funcubedongles to the newer 48 or 96 kHz version. 
      We recommend using the 48 kHz version for all deployments.  There is a new page on the SG web interface for updating the firmware
      of attached funcubedongle Pro Plus.  (The oiriginal funcubedongle Pro continues to use its original 96 kHz firmware.)

    Old: Here are power consumption figures for various configurations of the new Beaglebone Black using the 2014 software release (with Debian 7.0 armhf Linux) of the SensorGnome software.  Figures with the older software on the original Beaglebone White are available here.

    Current was measured using a CircuitTest PSC-336 power supply set to 12.5 Volts DC, attached to the SensorGnome's DC voltage converter.  For funcubedongles (fcd), processing was done at 48000 Hz, and each antenna was being monitored for pulses from Lotek nanotags within a +/- 24 kHz range while a tag emulator broadcasted a medley of four tags.  For the audio configuration, raw audio was simply recorded unprocessed to the internal 32 GB micro SD card.

    2014 Software Release Power Consumption Measurements

    Configuration Current (Amps)
    @ 12.5V
    Watts Amp Hours per Day
    @ 12.5V
    Beaglebone Black + USB Hub + PPS-GPS (no microphones or funcubedongles) 0.23 2.88 5.52
    Beaglebone Black + USB Hub + PPS-GPS + 1 fcd Pro (old fcd) 0.31 3.88 7.44
    Beaglebone Black + USB Hub + PPS-GPS + 1 x fcd ProPlus (new fcd) 0.33 4.13 7.92
    Beaglebone Black + USB Hub + PPS-GPS + 1 x fcd ProPlus + listening live via web interface 0.34 4.25 8.16
    Beaglebone Black + USB Hub + PPS-GPS + 2 x fcd ProPlus 0.42 5.25 10.08
    Beaglebone Black + USB Hub + PPS-GPS + 3 x fcd ProPlus 0.53 6.63 12.72
    Beaglebone Black + USB Hub + PPS-GPS + 3 x fcd ProPlus + 1 x fcd Pro
    Note: this combination does not work.  A BBB can only handle up to 3 x fcd ProPlus and no additional receivers.  It might be able to handle 2 x fcd ProPlus and 2 x fcd Pro, but this has not been tested.
    0.61 7.63 14.64
    Beaglebone Black + USB Hub + PPS-GPS + 1 XLR mic via Blue Icicle USB/XLR adapter 0.27 3.38 6.48

    Add / Remove Options
     

         
    add CablesToGo 5 metre USB extension cable Model #39978 (to allow fcd placement at antenna) +0.035 +0.44 +0.84
    remove GPS (e.g. if you have the real time clock board installed to set time) -0.028 -0.35 -0.67
    add TP-Link TL-WN725N Nano USB Wifi adapter and upload data continuously to wireless router +0.040 +0.50 +0.96
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