@andri_yadi | a at dycode dot com

http://andriyadi.me

Mobile + Cloud + IoT = Future

Andri Yadi

A story of product development, combining those

Part 2

CEO of

DyCode’s subsidiary, focuses on Jepret and IoT products

http://dycodex.com

This deck is part of this one:http://www.slideshare.net/andri_yadi/mobile-cloud-iot-future

Another Case StudyFree idea, for you to build :)

You want to create mobile app to monitor electricity usage

How do you achieve that?

Alternative #1 - Solution Manually enter the reading from electricity meter, regularly

Alternative #1 - Problem Are we living in a stone age? There should be a better solution :P

Another meter (digital version)

Anything in this meter that represents usage? Readable not only by human, but also by machine

LED blinking represents usage

1000 pulse = 1 kWh 1 pulse = 1Wh where 1 pulse = period = seconds between adjacent LED on Wattage = 3600 second/period

Turn out, there is…

If only we have a way to read the LED pulsing period

Create mobile app to capture the blinking Do simple image processing to determine that LED is ON or OFF Then determine the frequency of the ONs

Alternative #2 - Solution

Still need to physically come to the meter, to capture the blinking Impossible to do online usage monitoring

Alternative #2 - Problems

Cannot be solved solely by Mobile App

Architecture

Mobile app

Cloud

Data Source ????

For further data analysis and remote monitoring, you may need Cloud Still, how we collect the data?

You need IoT

Architecture

Mobile app

Cloud

IoT device is the data source

IoT

Sensor

MCU

Network

MQTT MQTT

IoT Architecture

WiFi ModuleLight sensor (Photosensitive Diode)

MCU

Used to determine electricity meter’s LED is being ON or OFF Put it as close as possible to meter’s LED LED is ON —> lower ADC value from light sensor

Light sensor

Demo

Demo Architecture

iOS app

MQTT Broker on Azure

MQTT MQTT

Espruino + Light Sensor

For simplicity of this demo, I use Espruino platform for MCU and development framework

Espruino

For internet connectivity via WiFi, I use ESP8266. Connected to Espruino Pico via WiFi Shim

Espruino + WiFi

Instead of purchasing nice looking Shim, I made my own! Ugly, I know :)

Espruino + WiFi

Espruino + WiFi +Light sensor

SetupAO of light sensor <—> A5 of Espruino

VCC of light sensor <—> 3.3v of Espruino GND <—> GND

Show me da Code!

iOS App Espruino Web IDE

https://github.com/andriyadi/Espruino-ElectricityMeterReader

Everything is here:

Custom IoT/hardware for your startup or any custom requirements?

office@dycode.com

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Thanks!Andri YadiEmail — a at dycode dot com twitter — @andri_yadi www — andriyadi.me github — github.com/andriyadi