sigfox makers tour - copenhagen
TRANSCRIPT
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Copenhagen Sigfox Makers Tour #20
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Introduction
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Schedule
Intro
Slides - All about Sigfox
Demos .. hopefully
Workshop - Your turn to work
Enjoy !
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Sigfox basics
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About Sigfox
Sigfox is not selling chips
Sigfox is not building connected solutions
Sigfox has invented a radio protocol
Sigfox operates a global network
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Why Sigfox ?
Need for a solution dedicated to the IoT, not an existing one tweaked for it.
We only serve the IoT, that’s why we’re doing it efficiently
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New possibilities
Existing solutions: Cheaper connection & extended battery life
Enables totally new IoT applications
Backup connectivity for higher bandwidth devices
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How to communicate
Detect something to send (that’s the hard part)
Power on the communication module
Send
Message is picked up by the network
Data is received on your server
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How hard ?
Send an AT command
You receive an HTTP Request on your application server
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Core concepts
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Out of the box
No connection
No configuration
No pairing
No signaling
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Energy efficiency
The Sigfox protocol has been designed to maximise energy efficiency
Tx: <50 mA during a few seconds (25mW ; 14dB)
Key factor: idle consumption (unconnected 99.x% of the time)
Idle consumption: a few µA
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Very Long Range
Best case scenario
+100km between transmitter & receiver (base station)
Real life
A few kms (city) to tens of kms (countryside), depending on the topography
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Outdoor & Indoor
Good indoor propagation properties
Of course, you need to consider signal attenuation (~20dB)
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Two-way communication
Devices can receive updates sent from your application server
Each communication is instigated by the device
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Small messages
Useful payload: up to 12 bytes
Up to 140 times each day
100 bits/s
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Payload examples
GPS coordinates (lat x lng) : 6 bytes
Temperature: 2 bytes
State reporting : 1 byte
Heartbeat, update request : 0 byte
Keep it as simple as possible. Less is more !
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Example: Sensit
816b1954 | 10000001 01101011 00011001 01010100
10000001 01101011 00011001 01010100 Active mode (Temp)
10000001 01101011 00011001 01010100 Temp. MSB & LSB
10000001 01101011 00011001 01010100 Humidity x2
Temp : 0110011001 = 409 . (409-200) / 8 = 26.125°C
Humidity: 01010100 = 84. 84/2 = 42%
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Security
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Security
No keys exchanged over the network, no handshake
Messages can be encrypted or scrambled
Each message is signed with a key unique to the device
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Message signature
With each message, a hash is calculated & sent; using:
Device ID
Secret key, unique to the device. Never transmitted OTA
Payload
Internal increment
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Radio properties
Great tolerance to interferors
Jamming resistant
Interception is hard: UNB & frequency diversity
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Jammers
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Interferors
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Radio Ultra Narrow Band
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Sigfox use
The network currently monitors a 192KHz part of the spectrum
Each message is ~100Hz wide
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Sigfox messages
192 KHz
Each repetition is 100Hz
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Regulations
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Regulations
Sigfox is operating on unlicensed Sub-GHz frequency bands all over the world
We just have to pick the right central frequency
Easy, right ?
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ETSI Duty cycle
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Unlicensed bands
Compliant with regulations
ETSI 300-220
FCC Part 15
ANATEL 506
AS/NZS 4268
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Different bands
Regional regulations affect
Central frequency
Power Output / Data Rate
Spectrum access
Handled by the Sigfox stack
Same hardware can be used, with software switches
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Coverage
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Global network
Sigfox is offering a global network, not a solution to build private networks
Roaming is included is the standard service
Devices will work the same all over the network
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Demo #1
basic hello world message
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Current use cases
Examples of solutions already in production
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Internet of Things ?
Consumer gadgets
Boring & usefulIoT
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Perfect Sigfox use cases
Independent solutions
no user, no power socket, no local network
Shy devices
Doesn’t speak much, but only useful data
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Sigfox foundation
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Antarctica
Tracking scientists & assets
Long reach
Ease of use
Robust trackers
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Wildlife
Rhinos tracking & monitoring
Anti poaching operation
Implant & play
Long reach
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Industry
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Predictive maintenance
Optimize & anticipate maintenance
Alerts when customer needs support
Lower operation costs
Increased safety and/or customer satisfaction
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Health & Assisted living
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Assisted Living Box
Elderly people benefiting from home services
Monitor carers come & go
NFC badge reader
ROI : 6 months
Increased service quality
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Defibrillators
Guarantee that the equipment is in working order
Reduced costs (easy installation)
Notifications
Central supervision
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Public sector
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Smart parking
Parking spots monitoring
Real time guidance for users
Traffic optimization
Local enforcement optimization
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Waste management
Optimize costs of collection
Plug & play
Years of battery life
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Utilities
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Metering
Different solutions
Smart or add-on to existing meters
Low cost of installation & operation
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Home & lifestyle
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Home Alarm System
Backup connectivity for GSM solution
Jamming resistant
Continuity of service
Self deployment
High capacity network
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Water quality monitoring
Swimming pool water quality monitor
Long reach (> WiFi)
No install
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GPS Trackers
Low cost, high precision trackers
No setup
No companion device required
Long reach
Cross borders
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Agriculture
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Crop management
Smart irrigation
Environnement sensors
Ease of use
Yield optimisation
24/7 data
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Connected Beehives
Automate & optimize honey production
Scales
Remote monitoring
Long battery life
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Weather monitoring
Accurate & personal weather data
Affordable
Easy installation
Long battery life
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Retail & other services
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Button
Simplest interface possible
Press a button ; trigger a service
No installation
Cloud-based service
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Customer Satisfaction
Effortless customer feedback
No wiring
No pairing
Long battery life
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Hardware solutions
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Hardware
SIGFOX is not a hardware vendor
Ecosystem of established partners
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Solutions
Modules
Easy to get started
Atim, Telit, TD
Chipsets
Cheaper
Atmel, OnSemi
Transceivers
SiLabs, Texas
Instrument
Quite expensive
for industrialisation
Skills needed
Ref.Designs
Cheapest solution
Skills++ needed
Certification
program
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Antenna
Not optional :)
Best way to ruin a great device is to mess the antenna integration
Balance between design & performance
We’re here to help you get in touch with specialists if needed
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Prototyping
Arduino & Raspberry Pi kits available from various websites
Check out http://partners.sigfox.com for the full details
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Cloud
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Get your data
View messages : Sigfox web platform
Get messages : REST API (pull)
Receive new messages : HTTP Callbacks (push)
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Callbacks
Each message received from your devices will be forwarded to your application server
Customisable headers & body
You can set more than one callback
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3rd party platforms
You can easily push your data to a 3rd party platform :
AWS, Azure, Telefonica, thethings.iO, IBM, Samsung…
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Downlink messages
A downlink message can be
Semi automatic : sent directly by the network
Customised : sent by your own application server
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Semi automatic callback
Simply set up the message to send, it can be:
an hardcoded frame
pre defined variable (timestamp, rssi)
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Downlink callbacks
Same mechanism as for the uplink callback, set an URL
Reply with the 8-byte downlink frame
Respect this JSON format : {
'{{deviceId}}': {
'downlinkData':{{data}}
}
}
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Workshop session
Using SmartEverything boards
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Contribute back
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Contribute
Don’t forget to publish your experiments
Code Samples, HW design, fails … will be useful to other people
We all start by copy/pasting ;)
Your own website, github, hackster.io, instructables … your call!
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Useful Resources
Session resources http://github.com/sigfox/makers-tour
Questions ? http://ask.sigfox.com
Github
http://github.com/sigfox
http://github.com/nicolsc
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Register
http://backend.sigfox.com/activate
Provider: Snootlab
Country : Denmark
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Hello World
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Arduino Setup
Open the Arduino IDE
Select the board (ports)
Board type : Arduino Uno
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Hello World Sketch
#include <SoftwareSerial.h>
SoftwareSerial sigfox(5,4); void setup() { Serial.begin(9600); sigfox.begin(9600); delay(300);
sigfox.write("AT$SB=1\r"); }
void loop() {
// put your main code here, to run repeatedly: while (sigfox.available()){
Serial.write(sigfox.read()); }
}
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Message received ?
http://backend.sigfox.com
Navigate to the devices menu in the top bar
Click on the ID of your device
Enter the messages menu from the left navigation column
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First callback
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Callback setup
Device Type menu
Click on your device type name
Enter the Callbacks menu
Select new default callback
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Callback setup
TYPE : DATA UPLINK
Choose a CHANNEL : URL (EMAIL for a quick test)
Url pattern: URL of your own server
Use HTTP method: GET/POST/PUT
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Callback status
In the Devices > Messages panel, you have a indicator of the callback status (an arrow)
Black : in progress
Green : Callback OK
Red : Callback KO (at least one of the callbacks failed)
Click the arrow to display details.
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Downlink
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How does it work ?
Send a message, with a downlink flag
Once message is sent, the module gets back to sleep
After 20s, it will wake up automatically, in Rx mode
It will wait 20s for a downlink message
Afterwards it will get back to sleep
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Downlink setup
To setup an automatic callback :
Device Type > Info > Edit
In the Downlink data settings, set the following :
Downlink Mode : DIRECT
Set the following value : 123400000BADCAFE
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How to request a downlink
Same AT command, with additional parameters
AT$SF=[hex byte]*, 1
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Handle the response
When entering Rx mode, the module will display
+RX BEGIN
Received frame (if any) will be displayed as: +RX= [byte] [byte] [byte] [byte] [byte] [byte] [byte] [byte]
End of Rx mode
+RX END
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Downlink callback
In Device Type > Info > Edit
change Downlink mode to CALLBACK
Create a new default callback, with TYPE : DATA | BIDIR
Then set up your URL
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Sample input output
AT$SF=55 50 4C 49 4E 4B,1
OK
+RX BEGIN
+RX=44 4F 57 4E 4C 49 4E 4B
+RX END
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Sample code
Arduino
https://github.com/sigfox/makers-tour
Server side
https://github.com/nicolsc/sigfox-downlink
PR welcome in different languages