gps-tracker | simple gps tracker built with balenaFin and a Quectel EC25 | Map library
kandi X-RAY | gps-tracker Summary
kandi X-RAY | gps-tracker Summary
GPS Tracker is a simple asset tracker built on balenaCloud and the balena fin board. It makes use of a Quectel EC25 modem to provide both cellular connectivity and GPS location services. The application is a simple node.js service that reads GPS NMEA sentences from the modems serial port and then updates the balena API every 10 minutes with the devices' location. The device location can then be seen from the balenaCloud dashboard.
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Community Discussions
Trending Discussions on gps-tracker
QUESTION
So I have this pet tracker I got from China This model (not advertising at all). It includes an option to change the report server so I set it up to report to my server but now I'd like to ba able to "decode" TCP Frame.
Here are two examples of what's sent (it's not sent together). It's really not intuitive so I'm posting this here hoping some of you are better at reading between the lines.
...ANSWER
Answered 2020-Jul-05 at 22:15I did not understand fully the usage of the server change command.
I stumbled upon this https://decoded.avast.io/martinhron/the-secret-life-of-gps-trackers/
In fact, the sensor has to get some response from the server for it to work properly, which lead me to setup a MITM (with socat, simply) and tcpdump is now way more verbose, scanning nearby WiFi networks and stuff, thanks China !! All without encryption OFC
QUESTION
Bought a Makerfab SIM808 ATMEGA328 module from Robotshop and I connect the micro usb to the module. The port does not show up on the ports list on the Arduino IDE and the documentation is very poor. Does anyone have any experience with this and know what I am missing.
Hardware details can be found here.
This is the datasheet.
Any help would be appreciated here.
...ANSWER
Answered 2018-May-17 at 03:58do you install the CP2104 driver to your PC before use it? This board use the CP2104 at the USB to TTL. Here is the driver:https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers Please try it. Hope it help for you.
QUESTION
Hi I'm new to programming and making a project exactly like these Real time GPS Tracker on JUST HTML / JS and Google Maps to be run on a handphone My Next step is all users should see others location and one of the answers said
you'd have to send the points to a server-side script using AJAX.
I know how ajax works i just don't know what he meant by server-side script
...ANSWER
Answered 2018-Apr-22 at 21:22The code above is not a server side scripting language as the url is still point to a .html page.
A server side scripting language is a language that runs on the server rather than on the client. example of a server side scripting language is php.
QUESTION
SQL Noob here. I am designing a GPS-tracker application and have two tables; a track descriptor table and a track data table. The track descriptor table has the primary key (autoincrement) and the track data table has the foreign key. I would like that after I delete a row from descriptor table, all keys greater than that key are decremented by 1 (does autoincrement do this?). I would also like the same thing to happen in the data table, where all keys greater than deleted are decremented. I am developing for Android and have know how to do it by this method: How do I add and subtract numbers in SQLite for android? . But this seems very resource intensive, is there any way to do the same thing at Table creation (triggers)? Here is the declaration of the two tables (sorry for the Java!!!):
...ANSWER
Answered 2017-Dec-16 at 23:21does autoincrement do this?
No, in fact coding AUTOINCREMENT
, restricts the re-use of unused rowids.
SQLite creates a unqiue identifier, the rowid, for every row unless you specify WITHOUT ROWID
. This identifier is known as the rowid.
If you code column_name INTEGER PRIMARY KEY
then column_name is an alias for the rowid (e.g. CREATE TABLE x (_id INTEGER PRIMARY KEY, another_column TEXT)
creates table x with 2 columns, column _id is an alias of the rowid)
The rowid will be a higher value (first it is 1) generally the next so normally 1,2 etc, unless the highest number has been used 9223372036854775807
in which case AUTOINCREMENT
if coded or not is considered as follows :-
If AUTOINCREMENT
has been coded (i.e column_name INTEGER PRIMARY KEY AUTOINCREMENT
). AUTOINCREMENT
guarantees a higher rowid, so once 9223372036854775807
has been reached an SQLITE_FULL exception is raised; and
- if you force an insertion using the value
9223372036854775807
for an alias of rowid where AUTOINCREMENT has been coded, then the SQLITE_FULL exception will occur if another insert is attempted.
Without AUTOINCREMENT
SQLITE randomly selects an unused rowid (e.g. your deleted row).
The AUTOINCREMENT
keyword thus ensures that rowid's will be larger.
- It is when
WITHOUT ROWID
is not coded that causes a unique generally incrementing column as the rowid. - It is the use of
column_name INTEGER PRIMARY KEY
that creates an alias for the rowid. - The rowid is not normally visible i.e.
SELECT *
, will not include the rowid column. However; it would include an alias of the rowid. - You can include the rowid by specifying it as a column e.g.
SELECT rowid, *
(the rowid and all other columns). - Coding the
AUTOINCREMENT
keyword imposes extra CPU, memory, disk space, and disk I/O overhead and should be avoided if not strictly needed. It is usually not needed.
You may wish to look at:-
QUESTION
Please help configure the delegate in my code. For the moment, I get the value nil.
Here is the first class:
...ANSWER
Answered 2017-Apr-03 at 08:28you are creating new instance of LoginViewController
inside your authorization
function, but what you should do it to create an instance of SettingsRepositoryImpl
inside your LoginViewController
like
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