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Coffee & Pi - Getting Started with Python
The Coffee & Pi meetup is a beginner-friendly gathering focused on Raspberry Pi and related technology, encouraging open discussion and collaboration among participants. Upcoming events include sessions on RetroPie, a major Raspberry Pi anniversary, and initiatives to connect various tech-focused communities in Philadelphia. The document also provides detailed instructions for installing Raspbian, setting up a Raspberry Pi photo booth, and necessary coding practices.
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Coffee & Pi - Getting Started with Python
- 1. Coffee & Pi GettingStarted with Python
- 2. Questions • Has anyonenever seen or used a Raspberry Pi? • Does anyone work professionally develop for Pi or embedded systems/IoT? • Windows or OS X? • Who is from Philadelphia? • Who is from the suburbs/outside the city/NJ?
- 3. Meetup Rules • Thisis a beginner friendly meetup, focus on Pi, but open to including other platforms and hardware • There are no stupid questions. • Open discussion is encouraged, keep it friendly! • If you have equipment you would like to talk about or test together, see me after the presentation! • Problems become opportunities when the right people join together! Be the bridge!
- 5. About Brad • 17+years in IT, tech support, Linux administration • Currently Senior DevOps Engineer for Health Union • Mostly self-taught, with help from mentors and Philly tech communities. Love just building stuff! • Not great at coding, really enjoy servers and apps! • Coffee & Pi is meant to help people at all ages and skill levels to learn more about technology
- 6. What I didon my summer vacation… • May - Participated in the 2nd Philly Art Museum Hackathon • Was a finalist again, 2nd year in a row, didn’t win… :( • June - Started a new job at Health Union… :) • June-August - Tried to build an iPhone travel app • Failed… :( (Did learn a lot about React Native and Swift!) • August - Registered Coffee & Pi with the Raspberry Pi Foundation • They have STICKERS!!! And I have news… :) • Got some great ideas and materials for future meetups! • Built a Raspberry Pi photo booth… and it works! :)
- 7. Upcoming “jams” inthe US
- 8. Upcoming Coffee &Pi • October 16 - Everything RetroPie! • Install and configure RetroPie • Explore and maybe demo some alternatives • November - Looking for topic ideas, open to suggestions • Will be more consistent with monthly meetups! • March 2018 - Raspberry Pi Big Birthday Weekend • Coffee & Pi is joining several Philly meetup groups and partners for one big event! • Introducing Philly & Pi
- 9. Philly & Pi •Organizing to bring Philly meetups and groups together for demos and talks to inspire people of all levels and ages to learn with Raspberry Pi • Already confirmed meetup groups and partners… • Coffee & Pi Meetup • Philly GraphDB MeetUp • Philly IoT MeetUp • DataPhilly Meetup • Raspberry Pi • Neo4j
- 10. Help Wanted! • Philly& PI - More details to come! Will be looking for other groups and partners to join! • Raspberry Pi is in talks about streaming feeds during the weekend too! Anyone have any equipment or connections that can help? • Will need volunteers if anyone is interested, will put you first in line for swag and includes a free Philly & Pi t-shirt! Let Brad know if you are!
- 11. Lets get tothe builds!
- 12. Download Raspbian with Desktop •https://www.raspberrypi.org/downloads/raspbian/ • Raspbian with Desktop 1.63 GB, Lite is 364 MB
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- 14. Etcher on macto flash microSD card • Download and Install Etcher - https://etcher.io • Download OS image, Insert SD memory card, Flash!
- 15. Etcher on macto flash microSD card • Wait for the files to copy…
- 16. Etcher on macto flash microSD card • Wait for the Validating of the image…
- 17. Etcher on macto flash microSD card • When it’s finished, you can safely remove memory card, and insert into Raspberry Pi and boot!
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- 19. Etcher on Windows7+ to microSD card • Download and Install Etcher - https://etcher.io • Download OS image, Insert SD memory card, Flash!
- 20. Etcher on Windows7+ to microSD card • Wait for the files to copy…
- 21. Etcher on Windows7+ to microSD card • Wait for the Validating of the image…
- 22. Etcher on Windows7+ to microSD card • I actually saw the Unmounting step…
- 23. Etcher on Windows7+ to microSD card • When it’s finished, you can safely remove memory card, and insert into Raspberry Pi and boot!
- 24.
- 25. Enable Wifi • Clickthe disconnected Wifi logo in toolbar (red arrows) • Select the target network • Enter network password/key • Verify icon goes to blue wifi
- 26. Run Updates • OpenTerminal • Run the following commands: • sudo apt-get update • sudo apt-get upgrade
- 27. Find the IPaddress • Open Terminal • Run the following command: • ifconfig • Check output for wlan0 for wifi • Run “exit” to close terminal
- 28. Open Raspberry PiConf • Click the drop down menu • Click on Preferences • Click on Raspberry Pi Configuration
- 29. Enable VNC Server •Click on Interfaces tab in Raspberry Pi Configuration • Click Enabled next to VNC option • Click on OK to save and enable VNC server
- 30. Configure VNC Server •After enabling, will have VNC icon in the toolbar • Clicking on the icon opens the VNC Server config settings • Also displays the wifi IP address • Authentication default is local user “pi” with password “raspberry”
- 31. Install VNC Connect •Visit RealVNC website to download VNC Connect client • https://www.realvnc.co m/en/connect/downloa d/vnc/ • Clients for Windows, Mac, Linux, Raspberry Pi, Solaris, HP-UX, AIX
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- 33. You are nowready to code!
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- 35. Install the PiStopon the GPIO before powering on the Raspberry Pi
- 36. Open Thonny • Worksheetsays to use Python 3 IDE, but use Thonny instead! It’s now the default app for .py • Click Menu - Programming - Thonny Python IDE
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- 38. Open PiStop Worksheet Scriptin Thonny • Code is online at https://github.com/CoffeeAndPi/PiStopWorksheet • Make changes, press Run Current Script button (looks like a play button) • To stop, click Interrupt/Reset button (looks like a stop button)
- 39. That’s PiStop! • Canuse worksheet to get started. • Expand on the ideas of challenging people by different sequences and creating code to meet those challenges. • I didn’t feel this was a enough for a meetup, wanted to do something actually useful and interesting
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- 42. Based on TouchSelfiePhoto Booth https://makezine.com/projects/raspberry-pi-photo-booth/
- 43. The Coffee &Pi Way • Need to install updates and python dependencies • Using the latest Raspbian (Stretch) Sept 7, 2017 • May be different than original blog, but tested! • Enable and add the camera and touch screen • Setup Google Photos API integration • Git clone repo, update settings, and run!
- 44. Required Components • RaspberryPi 3 + Raspbian Desktop OS • Raspberry Pi Camera V2 • Raspberry Pi 7” Touchscreen Display • USB battery pack (cordless) or USB cord • Case or 3D printed camera mount • Google Account with Photos API enabled
- 45. Install Touch Screen •Raspberry Pi 3 mounts onto the back of the touch screen with 4 screws • Run red and black cables from Pi to touch screen (other 3 are for Microsoft IoT and adv dev)
- 46. 7” Pi TouchScreen
- 47. Add ribbon cable silverside up
- 48. Add Raspberry Pi3 screw into 4 posts on touch screen
- 49. Loop the ribboncable to the Pi 3
- 50. Add red andblack jumper cables from Pi to touch screen
- 51. Install the PiCamera v2 Make sure the blue side faces the network port!
- 52. Enable the cameravia Raspberry Pi Configuration
- 53. Enabling the camera willtrigger a reboot
- 54. By default, thetouch screen display is upside-down!
- 55. Rotate touch screen 180degrees • Open terminal • sudo vi /boot/config.txt (or use fav text editor) • Add “lcd_rotate=2” to the bottom of the file • Save and reboot!
- 56. Test the Camera •Open Terminal • cd Desktop • raspistill -o cam.jpg • Should take picture and save to Desktop as cam.jpg • More raspistill options… https://www.raspberrypi.org/documentation/usage/ca mera/raspicam/raspistill.md
- 57. Setup Pi andDependencies • Open Terminal • Install Updates sudo apt-get update && sudo apt-get upgrade • Install Python Dependencies sudo apt-get install python-imaging python-gdata python-pil.imagetk • Install Google API for Python sudo pip install --upgrade google-api-python-client
- 58. Clone the repoto Pi • In Terminal… • mkdir git • cd git • git clone https://github.com/CoffeeAndPi/TouchSelfie
- 59. Create Google PhotosAlbum • https://photos.google.com/albums • Create an upload album, save one photo into it
- 60. Enable 2-Step Verification • https://myaccount.google.com/security •Follow wizard to enable 2-step verification
- 61. Turn on 2-Step Verification •Requires verifying with a cell or phone number
- 62. Create an AppPassword • Will only display if 2-Step verification is enabled!
- 63. Generate App Password •Choose a name for the app and Google will generate an app password in a yellow box. Save this!
- 64. Create API Keys •https://console.developers.google.com/apis/librar y • Click on Select a Project -> Click on + to create project
- 65. Create New Project •Fill in Project name, can be anything • Click Create when ready
- 66. Create Credentials • Selectthe project you just created • Click on Credentials on the left menu
- 67. Create Credentials • Clickon OAuth consent screen tab • Enter a product name show to users
- 68. Create Credentials • Clickon Credentials again • Click on Create credentials - OAuth client ID
- 69. Create Credentials • SelectOther for Application Type • Set Name as “Installed”, then click Create
- 70. Create Credentials • Clickon OK to dismiss the client IDs • Click on the “Installed” OAuth Client ID
- 71. Download Credentials JSON •Click on Download JSON and save to Raspberry Pi
- 72. Rename and MoveJSON • Rename the JSON file to OpenSelfie.json • Move to /home/pi/git/TouchSelfie/scripts
- 73. Run the App •Add Desktop/PhotoBooth.sh to the desktop • Make it executable! • Double click to start the app! • It’s a Raspberry Pi photo booth!!!
- 75. Thank you! • Anythingis possible! Keep experimenting!!! • Connect with other local and online communities for more help and support! • You have my permission to fail! Keep trying! • Please leave ratings and feedback on meetup.com, it helps others to find and know how Coffee & Pi goes!
- 76. Philly Tech Communities • PhillyPython Users Group (PhillyPUG) • https://www.meetup.com/preview/phillypug • Philly IoT Meetup • https://www.meetup.com/preview/Philadelphia- Internet-of-Things-Meetup • Hardware - NextFab, The Hacktory • Youth - TechGirlz, Hopeworks, Coded by: Kids
- 77. Raspberry Pi Resources •Use the #CoffeeAndPi to show off your projects! • We are on PhillyDev.org Slack #RaspberryPi • You can use the Coffee and Pi meetup tools, email group, online discussion board • Let me know if there’s anything I can do to help!
- 78. Thank you! Questions? If youhave equipment to test, come see me!