SDi-12 + GPS USB adapter test

I was able to perform some tests on the new SDI-12 + GPS USB adapter. I don’t have the GPS module but do have an arduino shield that features the same GolbalTol GPS module so I used some jumper wires to connect the GPS to the adapter. I did tests last night and overnight. Things are looking good. Here are some results:

Commands:

To get longitude and latitude, you will issue “zM!”. The return values are z(long)(lat)\r\n. The longitude and latitude are both in standard NMEA format of 100*(degree.minute). For instance, a longitude of -9412.3411 means -(94 degrees 12.3411 minutes).

To get day, month, and year, you will issue “zM1!”. The return value is again in standard NMEA format of +DDMMYY. For example, a date of +190317 means the 19th of March, 2017.

To get hour, minute, and second, you will issue “zM2!”. The return value is also in standard NMEA format of +hhmmss. For example, a time of +123507 means 12:35:07 in 24hr style so it is 12:35:07 PM for those that use 12hr style.

Sample commands (in red) and returns (in green):

Single-sensor measurement:

zM!
z0012
z
zD0!
z-09456.1234+4578.9012
zM1!
z0011
z
zD0!
z+190317
zM2!
z0011
z
zD0!
z+065402

Concurrent measurement:

zC!
z00102
zD0!
z-09456.1234+4578.9012
zC1!
z00101
zD0!
z+190317
zC2!
z00101
zD0!
z+065713

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: