This tutorial is describing how to create a new SigFox project based on the given SDK version 4-0-0. Read the full post to get the details.
Create a new SigFox Project
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Category Archives: Technology
Make an USB power supply with backup battery
I recently had to design a solution to power a arm based system like arduino with an external power supply but, as this system have to stay up even if current is cut, I also had to backup it with a battery. This post is describing the design for a such circuit.
Compared performance of different file transfer protocols over latency
Internet is providing more and more bandwidth to transfer files and files are bigger and bigger. One thing is not changing, it is latency as distance still the same over the time. When a protocol requires acknowledgment between blocks of transfer this latency is limiting the throughput like explained in this post.
The throughput is really different depending on the protocol in use to transfer the file. As I did not found something giving a lot of data to compare the existing protocol, i’ll try to get figures myself and detail here.
My Clermont’ech talk about MQTT
My last post was about a demonstration of what you can do in 5 minutes with MQTT. This video was part of a global MQTT presentation I’ve done for Clermont’ech APIHours.
Here is a full version of this talk in English. For French reader, the video of the talk in French will come soon as soon as Clermont’ech team will finalize it.
Enjoy !
Slide are here : http://slides.com/disk91/mqtt#/
How to use MQTT the 4 minutes tour
To prepare a presentation of MQTT for tomorrow, I just finished a MQTT / Mosquitto demonstration in a 4 minutes video. Enjoy !
How does Synology glacier backup is working
Synology is providing a Glacier backup tool which seems to be an easy way to backup data on the low cost amazon solution. I will not describe how to configure it a log of blogs are doing it and I do not like to be redundant. The question I did not find an easy answer was : will I be able to restore my backup even if my synology crashed and I would not be able to get one other…
Use of BeagleBone GPIO for SWD programming
Recently I killed on of SigFox Td1208 device by misprogramming it, destroying the bootloader. In a such situation serial port is not anymore accessible for programming. The use of JTAG port is a necessity. On the TD1208, jtag has been repaced by SWD which is a 2 wires port doing the same thing.
To use this port, you generally need a specific interface. These interfaces like Jlink are expensive (> 300€), some are less like BusPirate (30€). By the way, if you do not have it, you will have to order and wait for it. That’s why I’ve taken the choice of using my BeagleBone black device GPIO to pilot these signal. This code can easily be port to RaspberryPI…
Create a connected PIR sensor with SigFox
Pir sensor
In a previous blog post I described how I built a PIR sensor connected to Internet, based on the use of a Raspberry Pi device. As you can read in this previous post, the solution have a certain number of complexities like requiring a power supply, a 3G modem …
As it was originally planed to be done, here is the design of the same product, based on a SigFox device. This is really interesting to demonstrate the differences and the advantages of this technology. Let’s review how to built it !