Yakker
NMEA to WiFi Bridge
www.yakbitz.com
Once powered up the YAKKER creates a WiFi hotspot.
Connect to this with your Wifi Phone/Tablet etc using the
default password of 12345678.
Next start your browser and enter 192.168.4.1 into the
address bar to access the setup screen shown in Fig. 1.
Operating Mode
The yakker can operate as an Access Point which creates a
private network to which you connect your WiFi enabled
devices such as a smartphones, PCs or tablets. This is the
factory default mode.
The yakker can also connect to your existing WiFi network
so your devices can access the NMEA data broadcast by the
Yakker and also access resources of your network such as the
internet or a printer.
N.B.
If the Yakker cannot connect to your router pressing the
reset button will reboot it in Access Point mode.
Protocol
The Yakker can send your NMEA data over WiFi using
either UDP or TCP protocols as required by your navigation
software. UDP is the default factory setting.
Transmit Power
You can adjust the transmit power of the Yakker according to
the range required.
Baud Rate
The baud rate is the speed that your NMEA equipment such
as your AIS receiver, GPS, Sounder uses to export its data.
Refer to your equipment’s user to determine the speed that is
used. 4800 is the factory default setting.
Sentence Filtering
Port Filters allow you to block certain sentences from being
sent over WiFi.
To do this you need to know a little about the different types
of sentences. One excellent source of information can be
found
This is an example of an RMC sentence sent by a GPS
receiver.
$GPRMC,123519,A,4807.038,N,01131.000,E,022.4,084.4,23
0394,003.1,W*6A
Contained within this sentence are data relating to the time,
position, direction of travel and speed. The part that is
important to us for filtering purposes is just the first part
“$GPRMC”. The “$” is just used to indicate the start of a
sentence so we can ignore it. The first two characters of the
sentence “GP” comprise the Talker ID, this one tells us that
the sentence was sent from a GPS receiver. The next 3
characters “RMC”, the Sentence ID, tells us which sentence it
is. RMC is the acronym for “Recommended Minimum
Navigation Information”.
There are 3 ways to filter sentences:
2 character Talker ID eg. “GP” This will block all sentences
starting with GP.
3 character sentence type eg “RMC” This will block all RMC
sentences.
5 character Talker ID and sentence type eg. “GPRMC” This
will block only RMC sentences with a talker ID of GP.
You can have multiple filters set. Simply separate them with
commas eg. “DPT,GPRMC,WI,ZDA”
Sentence Conversion
MWV to VWR
Select this option if your autopilot requires
the VWR relative wind sentence but your wind instrument
only sends the MWV sentence. The YakBak will then
convert any incoming MWV sentence to VWR automatically.
V2.2 to V2.3
Select this option if your
GPS/Plotter or navigation software outputs
version 2.2 or earlier sentences but your
autopilot requires version 2.3 or later
sentences. The YakBak will then
automatically convert any outgoing
autopilot sentences to V2.3. The sentences
that will be converted are APB, BWC,
RMB, RMC, VTG and XTE.
Fig. 1
