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CircuitPython Weekly for 3 February 2020

Welcome to the CircuitPython Weekly meeting notes! Feel free to add your Hug Reports and Status Updates early. During the meeting, we go through them as a round robin sorted by username. If you can’t make the meeting and would still like to participate, add your notes with a “(missing meeting)” after your username and we’ll read them off for you.

Add any longer-form discussion topics or general questions you have to the “In the weeds” section.

Thanks! We hope to see you in the meeting!

Video is available here on YouTube and on diode.zone.

Join here for the chat all week: http://adafru.it/discord

The CircuitPython Weekly happens normally at 2pm ET/11am PT on Mondays. Check the #circuitpython channel on Discord for notices of change in time and links to past meetings.

CircuitPython development is sponsored by Adafruit. Please support them by purchasing hardware from https://adafruit.com.

Reminders: Podcast available on most services. Let us know if we’re missing some.

4:44 Community News

CircuitPython and Feather power wheelchair as an Xbox controller: Great example of the community, open-source, Feather and CircuitPython, all coming together: https://youtu.be/FgKNWc-EpHQ https://blog.adafruit.com/2020/01/31/freedom-wing-adapter-adapter-allows-power-wheelchairs-to-control-an-xbox-ablegamers-at_makers-soeveryonecangame-feather/

5:55 CLUE alpha released, micro:bit shaped, CircuitPython-powered, sensor-packed: https://www.adafruit.com/clue

6:45 circuitpython.org site video! https://youtu.be/40gZBLdDSZA

7:02 Open Hardware Summit wearable badge updates: https://github.com/adafruit/circuitpython-weekly-newsletter/blob/gh-pages/_drafts/2020-02-04-draft.md#open-hardware-summit-wearable-badge-updates

7:28 MariaJose Molina-Contreras has a talk at PyCon about how CircuitPython can help your plants, and how to build an indoor garden with microcontrollers and IoT: https://twitter.com/MJ_BIO/status/1222055833787412480

7:45 Nina has a Twitch stream on working on a CircuitPython PyPortal "ExpoVert" badge: https://www.twitch.tv/videos/544944172

8:14 List of electronics and Python Discord servers we put together: https://blog.adafruit.com/2020/01/30/discord-servers-for-electronics-making-python-and-more-discordapp/

9:15 Coming soon Feather Bluefruit Sense: https://github.com/adafruit/circuitpython-weekly-newsletter/raw/gh-pages/assets/02042020/2420featherbf_silk.png

9:44 DRAFT is here, goes out on Tues 11am via adafruitdaily.com https://github.com/adafruit/circuitpython-weekly-newsletter/blob/gh-pages/_drafts/2020-02-04-draft.md

10:08 Discord Server leveled up!

10:30 State of CircuitPython, Libraries and Blinka

10:58 Overall

  • 41 pull requests merged
    • 19 authors - Gustavvr, dherrada, FoamyGuy, tannewt, kattni, brentru, deshipu, 2bndy5, ladyada, cogliano, neoxharsh, siddacious, makermelissa, markpatterson27, jepler, RichardA1, dhalbert, hybotics, hierophect
    • 10 reviewers - caternuson, tannewt, kattni, makermelissa, brentru, jepler, sommersoft, ladyada, dhalbert, siddacious
  • 10 closed issues by 5 people, 8 opened by 6 people

Overall: Very close to getting to RC for 5.0. If you have any features or bugs that you think are urgent, please let Dan, Scott or Jeff know so we can track it. We have a couple of things we want to get out first. One final beta today, but RC beyond that. Lib stuff is going really well, as well as Blinka.

13:00 Core

Core CircuitPython GitHub download statistics request failed.

14:24 Libraries

18:55 Blinka

  • 1 pull requests merged
    • 1 authors - caternuson
    • 1 reviewers - ladyada
  • 0 open pull requests
  • 1 closed issues by 1 people, 4 opened by 4 people
  • 32 open issues
  • PyPI Downloads in the last week: 1966 Number of supported boards: 38

19:45 Hug reports

20:43 @tannewt

  • @brentru, @justin and @ladyada for helping me get going with Adafruit IO. Very excited to be using it.
  • @abraxa from the sigrok community for help this weekend.
  • @jepler for the pixelbuf review.

21:55 @TG-Techie

  • Community hug for creating an awesome product that is continually easier and easier to use

22:16 @adafruit (read by Phil during Community News)

  • Hug report to everyone making open source

@anecdata (lurking)

@AnneB (lurking)

22:38 @brentru, text-only

  • @ladyada for ESP32SPI socket and networkmanager
  • @jerryn for ctd work on

@cater (lurking)

22:58 @CGrover (text only)

  • Thank you to the CircuitPython community for unfailing support and encouragement.
  • Thanks to @AnneB for her insightful advice and help with the learning guide publishing process.
  • Thanks to @MakerMelissa for her expert Displayio tutorial. It was the tipping point for my understanding of Displayio.
  • To the author Donald Norris for the understandable object-oriented examples throughout his book, Python for Microcontrollers.

@charlesburnaford (lurking)

23:38 @CodeNSolder

  • Group Hug for making this welcoming and inclusive
  • Thanks to Ladyada and Brent Rubell for ESP32SPI and miniMQTT
  • Thanks to Danh, Cater, Hierophect, DavidGlaude, Jepler, Desiphu for helping with PyPortal neopixel queries.

24:22 @danh

  • @jepler for continued audio work
  • @kattni for rounding up all the CP library loose ends
  • @ladyada for CLUE, a very interesting new board with tiny display

@DaveP (lurking)

25:22 @dglaude

  • Group Hug for all the help since month in understanding CP and the community
  • Special hug this week @kattni, @MakerMelissa and @danh for the last questions I had.
  • Also John Park because I love the CP part of his video and the learn guide that follow… also he seems to discover bugs while doing that.

26:02 @deshipu

27:11 @Drew Fustini

  • Phil for helping us get LCDs quickly for OHS wristbands
  • Alex and Michael for working on getting the board to come up

@duewester (lurking)

27:52 @foamyguy

  • @danh for getting a new build of CPX+displayio firmware with gamepad for use with circuitplayground library
  • @cater for help troubleshooting Mag sensor
  • @ladyada for help with magnetometer / compass
  • @marius_450 for sharing super cool etch-a-sketch and maze Gizmo demos

@geekguy - Text Only

29:16 @hierophect (sick today, notes only)

  • @tannewt for reviewing the meowbit PR
  • @deshipu for providing a fun test game for the meowbit
  • Group hug to all

29:40 @jepler

30:57 @jerry (missing the meeting today)

  • group hug

31:07 @kattni

  • @MakerMelissa for displayio help
  • @jepler for quickly putting together a PR to resolve an issue I pointed out, and for persevering through trying to get it to build
  • @jepler, @ladyada, @cater for reviewing my PRs over the weekend
  • @foamyguy for picking up a ton of library PRs and issues, testing, reviewing and submitting fixes
  • @marius_450 for creating a super nifty maze game demo on Gizmo https://github.com/Marius-450/Maze_CP
  • @krayola for help bringing my imagined user experience to life

34:16 @KingerNorth (lurking)

  • General group hug for all the great people doing great work

34:32 @MakerMelissa

  • @sommersoft for updating the Blinka Board Count
  • @danh for the quick CLUE board fix
  • Group Hug

@Mr. Certainly (lurking)

34:48 @sommersoft (missing meeting; day job conflict)

  • @jepler for making quick work of getting mpy-cross builds into the CI/CD.
  • Group Hug

35:22 Status Updates

@anecdata (lurking)

@AnneB (lurking)

38:51 @brentru, text-only

  • Worked on a PyPortal Titano Planter Guide with Noe and Pedro, should be live by wed!
  • Working on CircuitPython_W5k, a pure-python ethernet module implementation
    • Currently working with the W5500 (Ethernet Featherwing), but has boilerplate’d code for adding different w5k family chips.
    • EthernetManager will be a high-level wrapper for this module
    • After this, I’ll be modifying requests and minimqtt to dynamically select which network manager you’ve passed it.

@cater (lurking)

39:39 @CGrover (text only)

  • Published the PyGamer Thermal Camera learning guide.
  • Made significant progress on the mystery project, applying some newly minted object-oriented coding skills. I’ve achieved the level of awkward overconfidence.
  • Two purple PCBs were completed, foiling their escape plans. Received a new shipment of 6 more boards (two designs) late last week. Will build those designs this week.
  • In the studio: just one track left to overdub and master. Getting close!

@charlesburnaford (lurking)

40:17 @CodeNSolder LAST WEEK

THIS WEEK

  • Playing with MIDI and Rotary encoders, managed to interface 4 so far with M0

42:59 @danh

  • Fixed some BLE bugs that caused bad behavior on reload when acting as a central.
  • Increased number of possible BLE connections.
  • Squashing remaining bugs in preparation for 5.0.0.
  • Upcoming:
    • 5.0.0-beta.5 is imminent and will probably be released today.
    • Working on faster SPI support on nRF52840.

@DaveP (lurking)

44:48 @dglaude

  • Last week
    • Finishing all the demo I had in mind, publishing the slide
    • Doing the Fosdem presentation (maybe more in the weeds)
    • Distributing 35 out of the 50 Blinka stickers I had
    • Visiting the MicroPython stand at Fosdem
    • Watching other IoT presentation:
      • MicroPython and Augmented Reality
      • TinyGo on Adafruit hardware (PyGamer/Badge PyPortal and ItsyBitsy M4)
  • This week
    • Take some rest
    • Check if I can do BLE in building Geolocalisation with CPB+Gizmo (There are at least 150 devices that act as “beacon”)
    • Start reading the 783 pages long book, in French, about MicroPython and Pyboard (I don’t even have the first Pyboard…)

46:40 @deshipu

  • Figuring out native .mpy files in MicroPython.
  • Showed PewPew M4 at devconf.cz.

@Drew Fustini (dropped from meeting) on the OHSummit wrist badge (nRF52840), Michael Welling has working sensors with CircuitPython:

  • BME680 Temperature, Pressure, and Humidity sensor
  • APDS-9960 Gesture Sensor
  • LSM9DS1 9DoF IMU We are still trying to figure out how to get the Microphone working in CircuitPython:
  • SPH0645LM4H-B Microphone

I'm waiting for Adafruit 1.54" LCD and a j-link to arrive in Berlin so then I can start helping with bring-up as well.

Project page: https://hackaday.io/project/168483-open-hardware-summit-2020-badge

@duewester (lurking)

48:50 @foamyguy Last Week

  • Testing multiple ToF sensors on same bus
  • CPX + Gizmo Thermometer screen example
  • Setting up test for long term stability issue with debounce library
  • Creating musical note tones with different waveforms
  • Work an issue relating to temperature value from the MPU6050 breakout Next Week
  • Finish bringing in the Compass and Inclinometer examples from an old PR
  • Polish up the Gizmo thermometer example
  • Work on NeoTrellis Tone Player example
  • Continue debouncer test
  • Playing with TPL5110 I picked up over the weekend

51:02 @geekguy - text only

  • Is there a preferred tool for editing font files like font5x8.bin?
  • I have been building up a script for testing many sensors where any can be turned on or off easily. This includes sensors that need to go through an I2C multiplexer. Interest?

52:10 @hierophect (out sick) Last week:

  • Wrapped up the Meowbit board support package
  • Wrote a quick demo for the Meowbit using Deshipu’s snake code
  • Added UF2 boot options to the STM32 port makefile
  • Added the STM32F407 Discovery, though it’s having USB issues This week:
  • Figure out what’s wrong with the F407 Discovery USB
  • Add temperature sensor and µs support to STM32 port (final 5.0 issue)
  • Finish espruino ports
  • Modify the STM32F4 UF2 bootloader to behave the same as Atmel/NRF on startup.

52:58 @jepler

  • Last week:
    • Worked on JEplayer bugs that I found during my own testing
    • Learned how to create release assets via actions for JEplayer
    • Investigated reported audio bugs
    • Investigated more string compression improvements
    • Reviewed the pixelbuf PR and found it nearly doubled the refresh rate of one of my LED test programs, awesome work.
    • Filed a PR to let displayio.Palette accept color tuples like pixelbuf
  • This week:
    • Spending up to 2 days to help “ulab” (numpy-like module for micropython) be portable to CircuitPython, need to contact @gatherera about it
    • Once requested changes come in from Limor for JEplayer, get back on that as top priority
    • Finish up PR for looping wav files that are not multiples of buffer size
    • Investigate audio “pops” report on nRF. Probably having never implemented code to ramp up/down between 0% PWM and 50% PWM at the start/end of playing.
    • If so, work on implementing this
    • Can we share the “convert tuple/bytearray to color integer” code between pixelbuf and displayio palette?
  • Ongoing fun projects:
    • I’ll be visiting Texas from the 12th to 24th, reduced availability on discord, will miss the weekly meeting on the 24th. If you’re in Austin, Dallas, or parts in between and would like to have a drink together, DM me and maybe we can work something out.

55:53 @kattni

  • Last week:
    • Published the MLX90640 guide
    • Helped spin up @foamyguy to get him ready to continue testing library PRs
    • Started the DPS310 guide and got it as far as I could without CircuitPython code and handed it over to Bryan to finish when he completes the driver
    • Went through the library PRs again
    • Started going through guide feedback, completed the simple ones, and started picking up the more complicated issues.
    • Started the CLUE product guide - got that as far as possible without the board.
    • Received CLUE board.
    • Started the CLUE library - a high level wrapper library that includes all the sensors and buttons etc, including the ability to easily display sensor data using displayio
  • This week:
    • Finish CLUE product guide - Last thing is adding the CircuitPython install screenshots.
    • Get CLUE library to PR state
      • Add touch - done
      • Finish up any code changes necessary
      • Document library
      • cookiecutter library
      • PR
    • Blog the MLX90640 guide
    • Reply to user on Discord who wrote a CircuitPython library about their options (community bundle, community list)
    • Port Sensor Lab example suite from Arduino to CircuitPython

@kingerNorth (lurking)

1:02:18 @MakerMelissa

  • Last Week:
    • Finished HT16K33 LED Backpack Guide Updates
    • Heads down working on WebSerial Plotter
  • This week:
    • Continue on WebSerial Plotter
    • Maybe start a new guide if the Plotter gets to a good pausing point soon

@Mr. Certainly (lurking)

1:03:00 @sommersoft (missing meeting; day job conflict)

  • Last Week:
    • RosiePi:
      • Configuration is now back to a complete working state, allowing dev progression.
    • adabot daily report/meeting notes:
      • Changed the count of supported boards to mirror circuitpython.org
      • List merged library PRs and the amount of time they were open, and collapse the open PR list.
  • This Week:
    • Adabot:
      • Add Community Bundle info to the library report and circuitpython.org/contributing.

35:55 @tannewt

  • Primarily focused on broadcast net - using BLE adverts to do simple but effective IoT. Take a device and broadcast its data. Making it easy to gather data from sensors near you. Put it on AdafruitIO. Excited to get this going.
  • Worked a little bit over the weekend on the TinyLogic Friend, making board into sigrok compatible logic analyser.
  • PyCascades in Portland - still finishing up presentation
  • BLE IoT and sensing stuff to go with CLUE and Feather Sense
  • Thank you to everyone who did CP2020, draft of recap post.
  • We’ll do it all year, so please post at any time and we’ll get it out there.

37:49 @TG-Techie

  • Over the past monthish, been putting together designs for watch running CP.
  • Also tried using displayio for graphics UI, instead made another GUI which video will be posted and example code

1:04:50 In The Weeds

  • 1:05:19 @deshipu: How to make CircuitPython games easier to find? Can we have a Discord channel for CircuitPython game discussions?
  • 1:09:21 @danh: go over remaining 5.0.0 milestone bugs and decide which are showstoppers.
  • 1:13:57 @jepler: https://github.com/adafruit/circuitpython/issues/2566 has a half baked class and a demo program (by me). Should I suggest @gmeader to work towards making this a community lib? Should I do it?
  • 1:16:33 @dglaude If wanted I can talk more about Fosdem’20
  • 1:23:40 @tg-techie Question about displayio and blit.

1:29:00 Wrap-Up