Tag Archives: gps

Abeeway 1WL devkit with Murata LBEU5ZZ1WL all in one tracking module

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The Abeeway 1WL development kit is dedicated to geolocation through various means such as GPS, GPS sniffing, WiFi sniffing, radio triangulation, BLE sniffing…, using the different components of the Murata LBEU5ZZ1 SiP module and Actility’s ThingPark geolocation platform, which gives meaning to the raw listening data. Abeeway is a key player in fleet tracking solutions, providing both a business platform and hardware solutions for this purpose.

Through Actility/Abeeway, I was able to obtain an evaluation kit whose main goal is to simplify access to these multiple geolocation technologies for the rapid development of customized tracking solutions.

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IoT, the tracking use-case

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I want to start a new category of posts about IoT, not focus on the technology itself but on the use-cases. That said, for sure my words will be on the technological aspects of this use-case. The objective is to let you understand what are the solution but also what are the challenges behind that use-case. To start I’ve selected the Tracking use-case, reviewing all the GPS, WiFi and operator technics.

Regarding my experience in IoT from the past 5 years, one of the biggest market for LPWAn is actually assets tracking. In number I assume alarm backup is a little bit behind but thanks to one uniq actor. Tracking is far away first regarding the number of actors already having implemented a solution in production. This is also where we find the largest number of objects on the market for a single use-case.

That’s why I decided to start with this use case. I also know it really well for being the founder of one of these solution : Foxtrackr and I’ve already implemented all the technics described below.

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Wisol WSSFM20R1 module

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New comer in the Sigfox ecosystem : the Wisol FM20R1.

Wisol have already changed the Sigfox module world by providing a solution based on the OnSemi design for transmitting on Sigfox network for about 2$. Now they are back with a full SoC solution for a really competitive price estimated under 15$. This solution is providing SigFox, GPS, Wifi, NFC, RF and includes an accelerometer.

 

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GPS antenna comparison

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antennaI’m using different GPS antennas with different price, size and gain and I had never compared the result in a real live test. So now it is done and the result are good to share.

My test condition are quite bad and we can’t really consider this as a scientific bench but, experimentally it sounds like a real life test.

So the test is to connect an antenna to a TD1204 with a GPS code on it and test the time it makes to fix the position and get some note about signal level, satellites in view… I used in fact 2 TD1204 : one with a reference antenna to ensure we have equivalent condition from one test to the others. The tests are made indoor where the sensitivity is an important factor. This post detail the results.

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Simple LoRa GPS tracker based on RN2483 and L80

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LoRa GPS Tracker

LoRa GPS Tracker

Todays work was to make a simple GPS tracker communicating over LoRaWAN to check the coverage of my LoRaWan gateway in the city. Basically this tracker reports a position per minute to the network. If coverage is good, position will be recorded in the backend. That’s all !

This post details how to do it easily with the low cost and common components : Arduino for the master, Microchip RN2483 for LoRaWan communication and L80 for GPS positioning.

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Extend TD1204 Standard firmware to simplify GPS

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TD1204 / Sigfox & GPS

TD1204 / Sigfox & GPS

The TD1204 modem firmware is a easy to use solution for sending message to Sigfox network. It starts to be complex when you want to create your own message including the GPS position. The standard firmware returns the satellite NMEA frames in text mode and you have to process it.

To make it simple I built a modification of the standard modem firmware to add an extra command to enrich a message with a GPS coordinate automatically.

 

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Telecom Design SDK decode GPS frame

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The Telecom Design SDK contains a function to encode GPS coordinates : TD_SENSOR_EncodePositionXY this function from the SDK allow to choose the size of the GPS encoded data and to reduce it. This post explains how this function works and gives a php implementation to decode it.

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