DIY projects with Ruby & Pi

Ruby and RaspberryPi are available to us for quite sometime and this talk is meant to discuss how to use Ruby to explore things on a RaspberryPi.

From a practical point of view, we will go through installation, setup, and build a simple Motion Sensor application and a Time-Lapse Camera using RaspberryPi.

Transcript

1. DIY projects with Ruby & Pi Helio Cola @hacrods
2. hac-rods.me Hi, I am Helio Cola! • ~17 years developing SW • ~7 years since I found happiness • ~6 years full time happiness • I go by @hacrods on the internet…
3. Agenda • What is available • Buy, Install, Setup • Development Environment • Sensors & Gadgets & Projects
4. What is available
5. What is available • RaspberryPi: https://www.raspberrypi.org/ • Parallella: https://www.parallella.org/
6. What is available: RaspberryPi • RaspberryPi: https://www.raspberrypi.org/ Raspberry Pi 0 Raspberry Pi 1 Model A+ Raspberry Pi 2 Model B Raspberry Pi 3 Model B Raspberry Pi 0 W(ireless)
7. Pi 0 Pi 1 A+ Pi 2 B Pi 3 B
8. Pi Zero vs Quarter
9. Differences between the Pi’ CPU RAM Display USB Others Pi 0 1Ghz, single-core 512MB CSI (v1.2 only) and Mini HDMI USB On-The- Go ports Pi 0 W 1Ghz, single-core 512MB CSI (v1.2 only) and Mini HDMI USB On-The- Go ports 802.11n Pi 1 A+ 700Mhz 512MB HDMI One USB 2.0 Port No Ethernet Low power 0.5W & 1W Pi 2 B 900MHz quad-core 1GB CSI, DSI, Full HDMI 4 USB 2.0 ports Ethernet Pi 3 B 1.2GHz 64-bit quad-core 1GB CSI, DSI, Full HDMI 4 USB ports Ethernet, 802.11n, Bluetooth & BLE
10. Differences between the Pi’ Price Dimensions GPIO Pi 0 $5 65mm long x 30mm wide x 5mm thick HAT-compatible 40-pin header Pi 0 W $10 65mm long x 30mm wide x 5mm thick HAT-compatible 40-pin header Pi 1 A+ $24.95 65mm x 56mm 40 GPIO pins Pi 2 B $39.95 85.60mm × 56.5mm 40 GPIO pins Pi 3 B $39.95 86.9mm x 58.5mm x 19.1mm 40 GPIO pins
11. What is available: Parallella • Parallella: https://www.parallella.org/ Parallella Microserver (P1600) Parallella Desktop (P1601) Parallella Embedded (P1602)
12. The differences CPU Price RAM HDMI USB GPIO Microserver 18 cores 667 MHz (max 1 GHz) $99 1GB RAM No 1 port No Desktop 18 cores 667 MHz (max 1 GHz) $149 1GB RAM Yes 1 port 24 ports Embedded 18 cores 667 MHz (max 1 GHz) $264.94 1GB RAM Yes 1 port 48 ports
13. Buy, Install, Setup
14. Where to buy • If you are near Pimoroni • If you are near Element14 • If you are near Adafruit • If you are near “Amazon” • Otherwise: find Micro Center near you
15. What to buy • Depend of what you are trying to do • The basics: Pi3 starter kit: board, case, power supply, heatsink, and micro SDHC Pi0 (W) starter kit: board, 2 micro USB to USB adaptor/cable, 4 port USB hub, mini to full HDMI adaptor, and micro SDHC • Extras: Camera, sensors, 7” Touch screen display, Blinkt!, etc
16. Pi3 Starter kit Reference: Amazon, CanaKit Raspberry Pi 3
17. Pi0 Starter kit Reference: Amazon, Raspberry Pi Zero W Complete Starter Kit
18. Sensors Reference: Amazon, KOOKYE 16 in 1 Smart Home Sensor Modules Kit
19. 7” Touch Screen display https://www.element14.com/community/docs/DOC-78156/l/raspberry-pi-7- touchscreen-display
20. Camera
21. Blinkt! https://shop.pimoroni.com/products/blinkt
22. Pi 3: Install, Setup • If your machine is Windows/Linux/Mac: https://developer.ubuntu.com/core/get-started/ installation-medias • If your machine is Linux: https://ubuntu-mate.org/raspberry-pi/
23. Pi 3: OS Download • Ubuntu Core, Ubuntu Mate, Windows 10 IoT Core Core: https://developer.ubuntu.com/core/get-started/ raspberry-pi-2-3 Mate: https://ubuntu-mate.org/download/ Windows (still on my TODO list): http://ms- iot.github.io/content/en-US/Downloads.htm
24. Pi 3: Installation on Mac • More or less these were my steps: 1. Download the image, un-archive, insert SD card 2. Run:
25. Pi 3: Setup • First boot: it will take longer • It may automatically extend the file system (Core) • Or you will have to do it manually (Mate) • Follow the instructions on the display • Configure your network • And an administrator account
26. Pi 3: On a TV
27. Pi 3: On a touch screen
28. Development Environment
29. (My) Development Environment • UbuntuMate OS: a GUI on top an Ubuntu distribution • ruby 2.1.5p273 (2014-11-13) [arm-linux-gnueabihf] • rvm & ruby 2.5 • Text Editor: vi or Mac/Atom/Git/RaspberryPi • Firefox: more than enough • A monitor or TV, keyboard and mouse
30. 7” Touch Screen display
31. 7” Touch Screen display
32. 7” Touch Screen display
33. Sensors
34. PIR Motion Sensor
35. Smoke and Combustible Gas
36. Buzzer
37. Carbon Monoxide
38. Digital touch
39. Flame
40. Vibration
41. Temperature and Humidity
42. Sound
43. Water level
44. Motion Sensor App
45. Motion Sensor App • My Hello World for RaspberryPi 3 • Detect “movement” • Do something: • Call an API • Sound an alarm • Turn on the lights and play a music • Turn on the Camera & record it until no more presence • Reporte event + video
46. Motion Sensor App Pi3 Rails App Local at your house, AWS, Heroku, etc Pi0W Front door Pi0W Back door Pi0W Game room
47. Motion Sensor App What you will need: • Raspberry Pi3 starter kit • Camera • PIR motion sensor • 7” touch screen (optional)
48. Motion Sensor App • Ruby as usual: rvm, ruby, rack, rails, rails-api, postgres, etc. Data model
49. Motion Sensor App • CRUD admin app & api to allow events to come in
50. PIR Motion Sensor
51. PIR Motion Sensor Reference: https://cdn-learn.adafruit.com/downloads/pdf/pir-passive-infrared-proximity-motion-sensor.pdf Passive infrared Pyroelectric IR motion
52. Monitoring the sensor Reference: https://github.com/jwhitehorn/pi_piper
53. (My) Home monitoring system
54. (My) Home monitoring system experiment • Left it running on my house for 2 months • A friend came by regularly to check the house • And walked through the sensor • And I monitored everything from the other side of the globe
55. Time-Lapse Camera
56. Time-Lapse Camera • Take pictures periodically • Blink lights Reference: https://projects.raspberrypi.org/en/projects/raspberry-pi-zero-time-lapse-cam
57. Time-Lapse Camera What you will need: • Raspberry Pi0 starter kit • GPIO Hammer Header (solderless) • Blinkt (optional) • Camera • Reused cardboard box & sunglass • 5V Power pack
58. Time-Lapse Camera
59. Time-Lapse Camera
60. Time-Lapse Camera
61. Time-Lapse Camera DEMO TIME!!!
62. References http://rayhightower.com/ https://www.raspberrypi.org/ https://www.parallella.org/ https://developer.ubuntu.com/core/get-started/installation-medias https://ubuntu-mate.org/raspberry-pi/ https://developer.ubuntu.com/core/get-started/raspberry-pi-2-3 https://ubuntu-mate.org/download/ http://ms-iot.github.io/content/en-US/Downloads.htm https://www.element14.com/community/docs/DOC-78156/l/raspberry-pi-7- touchscreen-display https://cdn-learn.adafruit.com/downloads/pdf/pir-passive-infrared-proximity- motion-sensor.pdf https://codingyoda.com/Raspberry-Pi-Email-PIR-Sensor.php https://github.com/jwhitehorn/pi_piper https://projects.raspberrypi.org/en/projects/raspberry-pi-zero-time-lapse-cam http://bit.ly/k8s-rpi
63. Thank you! http://bit.ly/k8s-rpi Helio Cola @hacrods