Brewing Eisbockwith Raspberry PI, Windows 10 IoT and

Microsoft Azure

Gunnar PeipmanCommunity guy and speaker from Estonia

Agenda• What is eisbock?• Freezing beer• Bringing in IoT• Reading sensors• Azure IoT Hub• Stream Analytics• Data visualization: Power BI, Excel, UWA

Support materials

http://bit.ly/beeriot

What is eisbock?

The Legend of Eisbock

n a wintery day, a brewery lad had been instructed by the brewmaster to r oll the casks of fi nished Bockbier fr om the brewery yard back into the cellar and then close shop. But after a long day of toil in fr ont of the mash tun the lad was just too tir ed in the evening to car ry out his master 's orders. I nstead,

he fi gured that there would be no har m in leaving them outside unti l morning. That night, however , turned out to be bitter cold, and the beer inside the casks fr oze solid.

The irate brewmaster , bent on meting out severe punishment, ordered the hapless lad to crack open the icy casks and dr ink the awful brownish stuff. The fr ightened lad, of course, did as he was told, taking mere tentative sips at fi rst, but then imbibing with ever increasing gusto. I n the center of each cask-size lump of ice was the most delicious, malty -sweet, and heavy beer imaginable. P unishment, indeed! The lad was the fi rst human ever to taste...Eisbock; and being a kind and generous sor t, he let the others shar e in his "punishment.„

H appened in R eichelbräu brew yard in the city of K ulmbach, at around 1890.

O

BeerKulmbacher

EisbockAventinus Weizen-Eisbock

Holzfass-gereifter Eisbock

Mauritius Eisbock

Edition 2014Alc. vol. 9.2% 12% 12% 10.9%Ratebeer 98/100 99/100 91/100 85/100

Freezing beer

Newton’s Law of CoolingThe rate of change of the temperature of an object is proportional to the difference

between its own temperature and the ambient temperature

Newton’s Law of CoolingAfter some math:

𝑇 (𝑡 )=𝑇 𝑎+(𝑇 0−𝑇 𝑎 )𝑒−𝑘𝑡where Ta – ambient temperature T0 – initial beer temperature k- cooling rate t - time

Newton’s Law of Cooling• Finding k – measure temperature after 30

minutes again and solve equation for k (you know t and T(30) both) • Finding t – solve equation for t using k

Newton’s Law of Cooling• The lower the

ambient temperature the faster is cooling

• The lower the ambient temperature the faster is cooling

Cooling chart

-10

-5

0

5

10

15

20

BeerTemp AmbientTemp

Problems• 20l of beer cools down slowly• I don’t want to open the bucket to avoid

contamination of beer• I don’t want to check temperature after

every 30 minutes• I want to have data about cooling• I want to get notified when beer is

turning to sleet

Solution

Bringing in IoT

What we need?Raspberry Pi DS18B20

DS2482-100 MS-DIP/SO10 4.7 kΩ resistor

Connecting parts together

Credits: Tomáš Greňo

Windows 10 IoT background task

Read temperatures

Find cooling rate

Find theoretical temperature

Find freezing estimate

Send data to Azure IoT Hub

Reading sensors• Use Rinsen.OneWire library• Use built-in support for DS18B20• It takes ~1s to read one sensor• Minimum reading interval: number of

sensors + 2 seconds

DemoReading sensors

Azure IoT Hub

IoT Hub vs Event HubArea Iot Hub Event Hubs

Communication patterns device-to-cloud and cloud-to-device messaging

Only enables event ingress

Device protocol support AMQP,AMQP over WebSockets, MQTT, HTTP/1Azure IoT Protocol Gateway

AMQPAMQP over WebSockets, HTTP/1

Scale Is optimized to support millions of simultaneously connected devices.

Up to 5,000 AMQP connections, as per Azure Service Bus quotas.

Messaging• device-to-cloud

messages sent to Azure IoT Hub by devices • cloud-to-device

message sent to device(s) by some service or process, delivery feedback is supported

PoliciesDefines set of permissions for connections that use given policy

Policy Permissions

iothubowner registry write, service connect, device connect

service service connect, device connext

device device connect

registryRead registry read

registryReadWrite registry write

PackagesFree S1 Standard S2 Standard

8k messages/unit/day 400k messages/unit/day 6M messages/unit/day

Device to cloud Device to cloud Device to cloud

Cloud to device Cloud to device Cloud to device

1 unit 200 units maximum 200 units maximum

FREE 50$ 500$

DemoSending and receiving messages from Azure IoT Hub

Stream AnalyticsInput

sources Query Output sources

Component Purpose

Input Event Hub, IoT Hub, Blob Storage,

Query Transforms input to out during given time window

Output SQL database, Blob Storage, Event Hub, Power BI, Table Storage, Service Bus Queue, Service Bus Topic, Document DB

Stream Analytics

DemoStream analytics in action

Power BI• Online service for

visualizing enterprise data• Free accounts available• Push-data supported by

Stream Analytics • Build impressive BI

dashboards and reports• Clients: web, desktop,

mobile

Demo5 min data visualization

Excel• Familiar to many people• Works with remote data• Easy to build „live“ sheets• Powerful data analysis• Powerful data visualization• Poor man’s Power BI

Excel

DemoExcel: 5 minute dashboard for sensors data

Universal Windows Application• Target Windows 10 devices• Use Universal Windows

Platform (UWP)• Use same code for• mobile• desktop• IoT (screen solutions)

• Cooling process in your pocket

Technical side• Visual Studio: Universal Windows App• Communications:• AMQPNetLite, AzureSbLite• Web API and Web API client

• Visual• WinRTXamlToolkit Chart• VisualStateManager

• Reading data• Background timer processes

DemoVisualizing sensors data using UWA

On-going work• Build better support system for

measurements• Adding new temperature measurements• Solving abv/abw measurements problems• Find a way to move to SaaS model

Thank you!