IoT: from zero to hero

GDG DevFest Nantes 10 November 2016

for web developers

@janjongboom

Developer EvangelistInternet of Things

Developers

From the internet of humans to the internet of devices

Who is making decisions when it comes to IoT?

NO

Real life example - Telenor

▪ Big telecom company

▪ Owns 4,000 buildings in Norway

▪ Toilet cleaning schedule made by 'hand'

Less people needed Automatic planningRealtime insight

Real life example - Telenor

▪ Big telecom company

▪ Owns 4,000 buildings in Norway

▪ Toilet cleaning schedule made by 'hand'

Less people needed Automatic planningRealtime insight

Internet of Things issensors + data intelligence

Three problemsHow to build smart devices?

How to discover devices?

How to interact with devices?

Discovering devices

Physical WebWalk up and use anything

BLE beacons31 bytes per packet

1 packet per second

7 years on an AA battery

Eddystone protocol

Movie poster

http://cinema/3281

Retail $4, Chipset $2

Interactivity

BLE is more than beacons

Battery service Heartrate service

Percentage

Capacity

Current HR

Max. detectable HR

Flying serviceDirection and height characteristics

nRF Connect

Programming devices

One year on AA battery 0.137 mA

220 mARaspberry Pi 3 (idle)

microcontrollersPain to program against (C, ASM)

Little code re-use

No code sharing

(since 2009)

mbed

Online IDE

Code sharing

Hardware Abstraction Layer

> 100 boards supported

~200 staff working on it

1.3 mio compiles / month

nRF51822Nordic Semiconductors

Developing for mbedC / C++ (not as scary as it sounds)

Large set of libraries

Solid Bluetooth stack

Announced 13 September

JavaScript on mbedBased on Samsung's JerryScript More overhead: 64K RAM, 512K Flash Bindings available for BLE

https://github.com/ARMmbed/mbed-js-ble-example

One year on AA battery 0.137 mA

220 mARaspberry Pi 3 (idle)

0.020 mAmbed OS 5 beaconEddystone, 1s interval, lowest power mode

Let's build some demo's!

Get hacking!

Thank you!http://janjongboom.com

@janjongboom

Links• Juggling demo: https://github.com/web-bluetooth/juggling

• Lights demo: https://github.com/janjongboom/codefest-ru

• Google Eddystone lib: https://github.com/roywant/EddystoneBeacon

• JavaScript on mbed: https://developer.mbed.org/blog/entry/Bringing-JavaScript-to-mbed-OS/

• JavaScript BLE app: https://github.com/ARMmbed/mbed-js-ble-example

• mbed Developer site: http://developer.mbed.org