Slides of YAPC::Asia Tokyo 2015. Talking about yet another cooking method with programming language.

1. Yet Another
Perl Cooking
@moznion

2. Yet Another
Perl Cooking
@moznion

3. @moznion

4. Yet Another
Perl Cooking
@moznion

5. What is the
Yet Another Cooking?

6. Yet Another Cooking
-API Based
-Via your gadget
-Reproducible
-And Automatic!

7. API Based
We don’t have to manipulate
with old-fashioned controllers
(knobs, switches and etc…)

8. API Based
“Cooking API is provided”
means we can cooking with
our favorite gadgets!

9. Reproducible
No matter who cooks,
the same dish will be ready

10. Automatic
The life is short to cook
elaborate meal.
We should make cooking
to be automatic!

11. Yet Another Cooking =
Programmable Cooking

12. Automatic
The life is short to cook
elaborate meal.
We should make cooking
to be automatic!
Nomiku has come

13. What is Nomiku
-Low temperature
cooking device
-Keeps temperature
of water
-And provides API!

14. What is Nomiku
-Low temperature
cooking device
-Keeps temperature
of water
-And provides API!

15. What is the
low temperature Cooking?

16. Low temperature cooking
-Also called “Sous-vide"
-Putting a food into
water tank which is
controlled temperature
constant

17. - Myosin (denatured @ 40℃)
- Actin (denatured @ 66℃)
For meat

18. For meat
- Meat to be parched if actin
gets denatured
- But we must kill bacteria
- Must keep 60-65℃
- (And collagen will hydrolyzes
at about 65 degreed)

19. For Vegetable
- Root vegetables indurate on
60℃
- Avoid to fall apart while
boiling by parboiling
- ref: http://www.netsubussei.jp/
group/kousai.pdf

20. Low temperature cooking
It is difficult to keep water
temperature constantly than
I thought…

21. Low temperature cooking
If mistake to keep
temperature,
it is DANGER cause by
bacteria!!!!!

22. Nomiku solves them!!!

23. Great! But…

25. Nomiku ga konee!!!

26. It’s no good worrying.
Okay, let’s construct
Nomiku compatible device
*** by hand ***

27. Features list
- Keeping temperature of
water long time
- Controlable via web API

28. Features list
- Keeping temperature of
water long time
- Controlable via web API
Simple!

29. API Spec
- Start heating
- And stop
- Change temperature
- Get status

30. Architecture

31. Raspberry Pi
in the water
water
temperature
gauge
heaterrelay
controll on/off
Monitor temperature
power source

32. water
temperature
gauge
Monitor
Daemon (perl)
GrowthForecast
Post temperature

34. Control
on/offServer
(Amon2::Lite)
GrowthForecast
heater
relay
power source
ConnectedGet current
temperature
(JSON API / 1min)
Access to
API

38. How to keep temperature?
- A daemon monitors
temperature of water
and store it into GrowthForecast

39. How to keep temperature?
- A server gets current temperature
from GrowthForecast
- If it is greater than target
temperature, turn off relay
- Less, turn on relay

46. Control
on/offServer
(Amon2::Lite)
GrowthForecast
heater
relay
power source
ConnectedGet current
temperature
(JSON API / 1min)
Access to
API

50. Start

51. Heating

52. Keeping

53. 4 hours later…

60. Good and easy!

61. Yet Another Cooking;
✔ API Based
✔ Reproducible
✔ Automatic

62. API Based
Provides web API on Raspberry Pi.
It makes us able to cook with
favorite thing!
(My favorite is cURL)

63. Reproducible
We only just share a
source code which uses
web API and run it.

64. Reproducible

65. Automatic
It keeps temperature
without our control.

66. Application Example

67. Use with slow cooker
Using slow cooker instead
heater is nice idea.
You can cook almost the
same.
Ref:
- Cooking for Geeks
- http://blog.naotaco.com/archives/
689#more-689

68. Other electronic devices
- Hot Plate
- It looks difficult to
control…
- Convection Oven
- Looks good

69. Can we automate frying?

70. Can we automate frying?
DANGER!!!!!

71. Future works
- Cooperate with…
- CI mechanism
- crontab

72. Future works
- Safety improvements

73. Future works
- 画像ドーン

74. DANGER!!!!!

75. Future works
- Generate convection

76. Conclusion

77. Conclusion
Now gadget is a new cooking
tool with using web API

78. Conclusion
Sharing source code =
Sharing recipe

79. Conclusion
It is able to automate of
cooking by power of device

80. Conclusion
Nowadays such devices are
on the market!
(e.g. nomiku, anova)

81. Conclusion
And we can make device
by hands with a bit DIY
splits!!

82. Conclusion
It is fun!!!

83. Yum!!!!!

84. References
- Cooking for Geeks
(Jeff Potter)
- 調理学
(畑江敬子, 香西みどり)

85. References
- http://blog.naotaco.com/
- http://
negineesan.hatenablog.co
m/