1. DIY Zoning: 7 Years Down The Road
Vadim Tkachenko

2. Before we start: questions
Write notes and pass them up so there's a chance to answer them in depth later, online
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3. Introduction

4. Introduction
What DZ is?
A Knowledge Base
A Temperature Zoning System

5. Introduction What DZ is? What DZ is not? A Knowledge Base
A Temperature Zoning System
What DZ is not?
Can't buy
Can't pay anyone to make for you (yet)‏

6. Gestation

7. Gestation Iowa house built in 1849 with no A/C
Arizona tri-level – scorching upstairs, freezing downstairs

8. Gestation Iowa house built in 1849 with no A/C
Arizona tri-level – scorching upstairs, freezing downstairs
Existing solutions: dumb systems, lying salespeople, incompetent consultants

9. Gestation Iowa house built in 1849 with no A/C
Arizona tri-level – scorching upstairs, freezing downstairs
Existing solutions: dumb systems, lying salespeople, incompetent consultants
Last straw: “You're too $^&* smart, we're not gonna do business with you”

10. Inception

11. Inception What one can't buy, one has to make KISS and cheap
Proper way to eat the elephant: one bite at a time
Therefore, “The Seven Steps”

12. Technicalities

13. Technicalities Step 1: Sensor Network Cheap: $3 1-Wire sensors
Distributed
Autoconfiguration, capabilities discovery
Heterogeneous

14. Technicalities Step 1: Sensor Network Step 2: Data Acquisition
Cheap: $3 1-Wire sensors
Distributed
Autoconfiguration, capabilities discovery
Heterogeneous
Step 2: Data Acquisition
rrdtool, xAP, xPL, generic broadcast

15. Technicalities Step 3: Visualization Too many ways You'd be surprised
Long term trends important
Stop, think, fix obvious problems

16. Technicalities
Step 4: Dampers
R/C Servos
Cheap
“Worse Is Better”

17. Technicalities Step 5: Core Logic Container architecture
Unlimited zones
Arbitrarily complex schedules
Pluggable control strategies

18. Technicalities Step 6: Passive Mode No need to fiddle with HVAC
May just work for you
Gets insurance off your back

19. Technicalities Step 7: Total Control STOP!
Abandon hope, all ye who enter here
You must understand the consequences
They will be after you if something goes wrong

20. Technicalities Beyond All kinds of sensors, not just temperature
Fault tolerance: can of worms
Home automation integration
Remote access
Family friendly controls

21. Denial

22. Denial
HVAC contractors: “This is more complicated than rocket science”
Not really, but close enough

23. Denial
HVAC contractors: “This is more complicated than rocket science”
Not really, but close enough
“Get out of our business and stay out”
I don't think so

24. Denial
HVAC contractors: “This is more complicated than rocket science”
Not really, but close enough
“Get out of our business and stay out”
I don't think so
It is too complicated for them, too

25. Acceptance

26. Acceptance Top link on Google for “temperature zoning”
Ahead of Honeywell, Carrier, Trane, Arzel Zoning and others (they do this for living)‏
Respected by HVAC contractors

27. Side Effects
You can be sure you did something good when it turns out you've been ripped off
Imitation, flattery, Honeywell thermostats

28. Side Effects
You can be sure you did something good when it turns out you've been ripped off
Imitation, flattery, Honeywell thermostats
They still haven't called

29. Side Effects
You can be sure you did something good when it turns out you've been ripped off
Imitation, flattery, Honeywell thermostats
They still haven't called
Big, bad wolf out there

30. Side Effects
You can be sure you did something good when it turns out you've been ripped off
Imitation, flattery, Honeywell thermostats
They still haven't called
Big, bad wolf out there
Chilling effect: most of research is private now

31. Maturity

32. Maturity Monolithic became modular Centralized became distributed
“Do all things poorly” became “do one thing, do it good”, many times over
“Need to know what great ideas to discard”
Interoperability is the key
Change of focus: Now that we've taken care of your sinusitis...

33. Enterprise Ramifications

34. Enterprise Ramifications
Parallel semantics perfected
Distributed semantics uncovered
Fault tolerance is most stringent
There is no such thing as too much monitoring
JMX instrumentation helps
Long term trends important: visualize!
Component model and pattern reuse

35. Google search “temperature zoning”
Questions?
DIY Zoning
Google search “temperature zoning”