diff --git a/2019/2019-08-05.md b/2019/2019-08-05.md new file mode 100644 index 0000000..17874c4 --- /dev/null +++ b/2019/2019-08-05.md @@ -0,0 +1,235 @@ +# CircuitPython Weekly August 5th, 2019 + +Video of the meeting is available [on YouTube](https://youtu.be/jWAWQpZQoHY) and [on diode.zone](https://diode.zone/videos/watch/f17e04ff-a7e9-4749-94e2-3dbe5dde8972) + + +Join here for the chat all week: http://adafru.it/discord + + + +The weekly happens normally at 2pm ET/11am PT on Mondays. Check the #circuitpython channel for notices of change in time and links to past episodes. + + +CircuitPython development is sponsored by Adafruit. Please support them by purchasing hardware from adafruit.com. + + +Reminders: Podcast available on most services. Let us know if we’re missing some. + +## 4:50 Community News + +DRAFT newsletter! +https://github.com/adafruit/circuitpython-weekly-newsletter/blob/gh-pages/_drafts/2019-08-06-draft.md + +8/8/2019 is CircuitPython day! +We'll have a show on Weds, and Thurs, and more planned! +Some photos! +https://photos.app.goo.gl/xoAHetFnCj6RQpnz7 + +Kattni PyOhio keynote video posted! +https://youtu.be/-bBHXimlfPQ + +Accelerating Driver Development with CircuitPython +https://pybay.com/speaker/bryan-siepert/ + +CircuitPython 4.1.0 Released! +https://github.com/adafruit/circuitpython/releases/tag/4.1.0 + +NEW BOOK! CircuitPython for beginners with Adafruit Circuit Playground Express & Mu in Japanese +https://twitter.com/AoyamaProd/status/1157775643750232064 + +CircuitPython editing and saving on iOS is here! +https://blog.adafruit.com/2019/07/30/its-now-possible-to-open-edit-and-save-python-code-on-ios-for-embedded-electronics-plugged-in-circuitpython-usb-devices-apple-ios-circuitpython/ + +CircuitPython sneks its way to Snek! +https://circuitpython.org/board/snekboard/ + +“RISC architecture is gonna change everything” +https://youtu.be/RL9yCWv7NS0 +We’re excited for open silicon! If someone is working on a RISC-V microcontroller with built-in USB and a good chunk of RAM please let us know! We're looking forward to writing "CircuitPython snakes its way to RISC-V!" +https://blog.adafruit.com/2019/08/02/risc-architecture-is-gonna-change-everything-adafruit-joins-the-risc-v-foundation-risc_v-riscv-adafruit-adafruit/ +added #risc-v topic in Discord, er, RISCord… + +Best swag, yay! +https://twitter.com/JackieKazil/status/1157502891822858243 + +## 11:08 State of CircuitPython + Libraries +Script is not happy. (@sommersoft: I restarted it yesterday. Failed both times due to requests/urllib3 timeouts) + +https://adafruit-circuit-python.s3.amazonaws.com/adabot/bin/adabot/circuitpython_library_report_20190805.txt + +CircuitPython 4.1.0 stable has been released! +5.x alphas coming soon! + +## 13:08 Hug Reports + +17:10 @_cli_ninja - phillip for boards for circuitpython day and help organizing! They had cake! + +18:03 @brentr +* @kantti for the keynote, watched it yesterday and it was wonderful. Circuit python = Code+Community! +* Sybrenstuvel on GitHub for Python-RSA, a pure-python RSA implementation. +* Another for @kattni for CPX docs/learnguides/resources, taught a class at NYCResistor on Circuitpython on the CPX and your resources helped me create curriculum for the class. +* @danh BLE work + +@cater - lurking + +19:20 @CGrover - group hug! +* Ladyada for useful decision in hardware design. +* Kattni for inspiring keynote. + +20:02 @danh +* @kattni for the keynote again, got to watch it +* @tannewt for 4.1.0 release +* @deshipu for _stage fixes and enhancements, pre-allocating buffers +* @sethitow for BLE doc fix +* @jepler for PWM and audio work + +21:06 @Dave Briccetti +* General thanks for Circuit Python. It’s so nice to run Python on the Circuit Playground Express with my students. + +@DaveP - lurking + +21:32 @deshipu +* @kattni for the keynote and a new font from it +* @danh, @jepler and @tannewt for reviews and improvement suggestions +* @jepler for discussion on audio buffers +* @sommersoft, @jerryn and @ladyada for English lessons +* @danh and @jerryn for continuing their fight with BLE + +22:30 @hukuzatanu - lurking - but hugs to _everyone_ who’s written Python intro guides. I’ve been able to point a number of people on Discord to them instead of saying “go buy this 1000-page Lutz book to learn Python.” :-) + +22:55 @jepler +* Group hug + +23:22 @jerryn +* @danh for continued BLE work and his patience with my questions. + +23:40 @kattni (missing meeting) +* Thank you to everyone involved with PyOhio and my keynote. I will do my individual hugs next week when I’m around. + +23:55 @MakerMelissa +* @Kattni for your excellent keynote. I enjoyed watching it...twice. :) + +@MikeBarela - lurking + +@ptorrone/adafruit - Thank you to all those folks who did CircuitPython Day events. + +@sommersoft (lurking) +* Group Hug! + +13:55 @tannewt +* Kattni for the wonderful keynote. Community is key for CircuitPython: https://www.youtube.com/watch?v=-bBHXimlfPQ +* Jepler and sommersoft for the audio work. +* Hexthat for fixing up audiocore imports +* @matt-land for ImageLoad reviews +* Matt Trentini for Extending MicroPython talk at PyCon.AU: https://www.youtube.com/watch?v=fUb3Urw4H-E +* Nina for debugging talk at PyCon.AU: https://www.youtube.com/watch?v=HHrVBKZLolg +* Elizabeth Dunham for community talk at PyCon.AU: https://www.youtube.com/watch?v=TW7PxyrCBR0 +* Thanks to PyOhio and PyCon.AU folks for including those of only online with the talk videos. + +## 24:27 Status Updates + +38:22 @_cli_ninja Gonna try the MQTT lib tomorrow and see how it goes with local and remote broker. Also did some light painting with circuitplayground last week, and looking for a BLE board to work on ble projects . + +28:36 @brentru +* Last Week: IOT Monthly sent, Started work on CircuitPython RSA and Google IOT Core for Circuit python, misc. support/board bring up work. Spent my saturday PM teaching Circuit python at NYCResistor - oldest hackerspace in US. Lots of ideas on improving curriculum for the next time? Teaching absolute beginners to programming, nvm hardware. +* CPY RSA is in a good spot, will likely see a release this week prior to an IOT Core release + * Hitting a memory issue whilst porting Pyasn1 (https://github.com/etingof/pyasn1) over, if anyone has any “favorite asn.1” libraries, or would be interested in helping me see where/why it’s failing (tosses a generic MemoryError), let me know. + * This work will let us load PEM files directly from the CIRCUITPY drive, opposed to decoding on your machine and loading into a secrets.py file. + * Hashing, encryption/decryption all work + * Tests written for high-level methods. +* Google IOT Core for CircuitPy + * Requires a JSON web token, hence all the RSA work (we may use this for IO in the future, it’s a better scheme than what we have now). + * Hopefully will auth/talk with an application by EOD today, working on the library today. + +@cater - lurking + +31:14 @CGrover +* adding musical envelope generator to custom featherwing. (ADSR) Probably use digital potentiometers. Can play Star Trek theme. Interesting volume trick by modifying aref. + +New string car m0 express will likely be new board def. + +Cheaper than gym membership and twice as sweaty landscaping project. + +35:33 @danh +* Got pairing working and Current Time Service client working: can fetch time from an IOS device. +* Working on BLE HID. Generalized current HID library so it can be used with BLE. Augmenting bleio as needed for BLE HID, and doing a little API restructuring + * additional functionality for bleio.Descriptor + * Can pass security permissions to Characteristic and Descriptor + * Changed Characteristic.properties to a bitmask instead of a bunch of boolean args + * Refactoring internals +* To do: bonding + +38:40 @Dave Briccetti +* With students, using CPE accelerometer with a p5.js program, to control the initial velocity of the boxes. Perhaps we’ll use this. + +@DaveP - lurking + +39:50 @deshipu +* Stage updates (MicroPython, scaling, GIF) +* Another PewPew-based badge for a conference +* Second prototype for PewPew M4 — mostly working, only one bodge wire +* PewPew Standalone now produced and sold by Makerfabs + +@hukuzatuna - lurking + +44:35 @jepler +* Nrf pwm audio: feature complete, pull request waiting for review and merge. I don’t think anybody else has tried this code yet, though :( +* Nrf “link time optimization”: pull request sent, is a trade off: increases build time but yields ~14% runtime performance improvement in “pystone” benchmark + +46:43 @jerryn +* Mostly a Raspberry Pi week - Buster updates and some camera projects. + * Blinka working very well! +* Finally got to start poking at BLE -- with some help and pre-releases from Dan + * Hope to have more time to explore this week. Sounds familiar…. + +@jtrip - lurking + +48:14 @kattni (missing meeting) +* PyOhio 2019 keynote - more next week. +* Short vacation +* PyRuler guide +* Next up: display guides + +48:30 @MakerMelissa +* Last Week: + * Wrote a triangle Display Shape to get more familiar with displayio + * Wrote Updated displayio Demo + * Worked on updating lots of display guides with displayio specific setup steps + * Updated Arduino ImageReader examples +* This Week: + * Continuing to update display guides + +@MikeBarela - lurking + +49:45 @sommersoft (lurking) +* Last Week: + * RosiePi: + * Got Ubuntu Server 19.04 working. Its gcc-arm-none-eabi package is version 7-2018-q2, so firmware building will match current. + * New Ansible headaches, with new OS/packages. + * MixerVoice + * Working on M4 again. + * Discovered DeanM didn't get M0 functions finished. M0 doesn't have the Thumb/ASM instructions used on M4. +* This Week: + * MixerVoice: get M0 functions working + * adabot: look into increasing occurrences of requests/urllib3 timeouts + +25:18 @tannewt +* More EInk tricolor work. Next work is to redo refresh API. It’s the final displayio work todo too. +* Released 4.1.0 +* Pushed driver repos if people want to test. +* Leave for New York Tuesday afternoon and back Sunday evening. +* Lots of videos, photos and streaming including CircuitPython Day! + +## 51:34 In the Weeds + +@danh +* 51:57 Are non-Latin language translations (e.g. Korean) blocked due to missing Unicode functionality or fonts or both? Korean has a syllabic alphabet, about 90 characters. For ideograph languages, we could separate needing a font from being able to use Unicode chars over serial. We’ll need to test further. +* 55:08 Increase circuitpython Travis builds to >5 jobs to speed up builds. We are paying for 10 concurrent jobs but share with other Adafruit builds. Maybe reorganize boards lists and collect third-party boards in separate lists. Could break build into one board+ all languages per job, and have shorter but more jobs. @sommersoft would like to clean up the build using travis matrix. + +@jepler +* 1:02:02 I think that we can do better buffer allocation for audio I/O, but it requires more cooperation between audio sources (WaveFile, RawAudio, Mixer) and the audio device (AudioOut, PWMAudioOut). Just what this looks like is unclear, but it might save ~512 bytes of RAM when playing audio. + +@tannewt +* 1:05:30 Remove displayio.Shape? + +## 1:10:25 Wrap-up