timo punkka · 1 15+ years of professional development 10+ years of agile development certified...

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15+ years of professional development

10+ years of Agile development

Certified Scrum Professional

Timo Punkka

timo.punkka at ngware.eung-embedded.blogspot.com@tpunkka

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Motivation to consider Agile development for hardware development

New prototyping approach for learning in addition to validating

How fast-paced iterative planning can fit development with longer natural cycles?

More collaborative approach to co-design of embedded system through cadence

We are uncovering better ways of developing software by doing it and helping others do it. Through this work we have come to value:

Individuals and interactions over processes and too ls

Working software (product) over comprehensive docum entation

Customer collaboration over contract negotiation

Responding to change over following a plan

That is, while there is value in the items on the right, we value the items on the left more.

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Scrum

Development

?

Earlier I had to wait for months to be

disappointed.

Now I can get disappointed every two weeks.

Great!

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Illusion of Control Chaos

1000W

20EUR

Scandinavia

750W

24EUR

Europe

Learning and discovery

[Kuva tosi teknisestä laitteesta,

Kuvaamaan että ei voi tehdä etukäteen??]

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“Each element in the system is ignorant of the behavior of the system as a whole, it responds only to information that is available to it locally.

Cilliers, 1998

“If each subsystem, regarded separately, is made to operate with maximum efficiency, the system as a whole will not operate with utmost efficiency. “

Skyttner, 2001

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Shared Understanding of Direction

Enables;

Collective Decision Making

Single consciousness





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Alternative: Cross-Disciplined Up-front prototyping

“Experimenting, not validating”

No Free Prototypes?

Design

Review Manufacture

Prepare

Material

Labour

Testing

Rework

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REWORK

Re

wo

rk

Re

wo

rk

Flexible Architecture

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Think Big, Think Horizontal

Adapted fromDoing Hard Time, Bruce Douglas

Vertical Slicing

Design for manuf.

Mechanics

PCB layout

Electronics/schematic

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Implement Small,Implement Vertical

Power andbuses

Uncertainblocks

FullSolution

Optimize

Adapted fromDoing Hard Time, Bruce Douglas

Vertical Slicing

Schematics

3d models

Simulation

Bread board prototypes

Re-usable generic prototypes

Evaluation boards

Partial prototypes

FPGA

3d printers

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Evaluation board

Bread board

Partial Prototype

Evaluation board

Partial Prototype

Partial Prototype

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Identify and prioritize uncertainties

Deal with it:

1. Use focused prototypes to buy uncertainty down

2. Keep options and defer decisions

3. Isolate uncertainty

Remember to learn from prototypes!





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Cadence (Rhythm)

Product

Vision

Release Plan

•Processor

environment

•Power monitoring

Release Plan

Power capacityRelease Plan

•Heat

management

•Manufacturability

Frequent plan re-synchronizing based on learning

Innovating tobring testing and automation forward

Reducing the ‘get it right the first time’ attitude

Diminishing difference between disciplines

Positive reinforcing loop of agile co-design

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Hardware unit tests

CLI

Hardware Unit Tests

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Embedded system development involves multiple perspectives, learning and discovery

Up-front prototyping is used for experimenting, not validating

Vertical slicing can be used for learning with partial prototypes

Shared cadence amplifies learning across the organization

Books

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Photo credits (all @stock.xchng)Light meter: GlennPebQuestion marks: immrchrisScream: livinusFrogs: sarej

All @ stock.xchng

timo punkka · 1 15+ years of professional development 10+ years of agile development certified...

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