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# CircuitPython Weekly for 8 July 2019
Welcome to the CircuitPython Weekly meeting notes! Feel free to add your notes for 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](https://youtu.be/6gkVEqh0HEA).
Join here for the chat all week: https://adafru.it/discord
The 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.
## 3:18 Community News
8/8/2019 is CircuitPython day!
Getting started programming microcontrollers with CircuitPython by NYC Resistor - August 3, 2019.
CircuitPython Day with the India Linux Users Group Delhi (ILUGD) at the Delhi Technical University for Women - August 4, 2019.
Scott's teardown presentation "Supercharge Your Hardware" is up on GitHub.
https://github.com/tannewt/presentations/blob/master/teardown2019/presentation.md
https://hackaday.com/2019/07/03/teardown-2019-a-festival-of-hacking-art-and-fpgas/
PyBadger Event Badge
Create a CircuitPython powered event badge with PyBadger, PyBadge and PyGamer!
https://learn.adafruit.com/pybadger-event-badge?view=all
Made with Mu - Alpha 2 Released with Web Mode
https://madewith.mu/mu/users/2019/07/05/alpha2.html
## 5:14 State of CircuitPython + Libraries
### 5:44 Overall
* 15 pull requests merged
* 9 authors - dastels, kattni, tgikal, tannewt, caternuson, makermelissa, deshipu, jerryneedell, brentru
* 5 reviewers - ladyada, caternuson, kattni, tannewt, brentru
* 9 closed issues by 8 people, 5 opened by 5 people
Overall: Have 4.x stable and unstable. 4.1.0 stable work is in progress. 5.0 will bring ble api changes after that. Still adding new libraries each week. Thanks to all contributors.
### 7:29 Core
* 3 pull requests merged
* 2 authors - tannewt, deshipu
* 1 reviewers - tannewt
* 8 open pull requests
* https://github.com/adafruit/circuitpython/pull/1988
* https://github.com/adafruit/circuitpython/pull/1986
* https://github.com/adafruit/circuitpython/pull/1985
* https://github.com/adafruit/circuitpython/pull/1984
* https://github.com/adafruit/circuitpython/pull/1925
* https://github.com/adafruit/circuitpython/pull/1858
* https://github.com/adafruit/circuitpython/pull/1363
* https://github.com/adafruit/circuitpython/pull/1274
* 3 closed issues by 3 people, 2 opened by 2 people
* 180 open issues
* https://github.com/adafruit/circuitpython/issues
* 6 active milestones
* 4.1.0: 1 open issues
* 4.x - Features: 38 open issues
* 4.x.x - Bug fixes: 3 open issues
* 5.x: 2 open issues
* Libraries: 9 open issues
* Long term: 125 open issues
* 2 issues not assigned a milestone
Download stats by board:
| Board | 4.0.2 | 4.1.0-beta.1 |
| ----------------------------------------------|--------|---------------|
| arduino_mkr1300 | 1 | 1 |
| arduino_mkrzero | 3 | 2 |
| arduino_zero | 10 | 3 |
| bast_pro_mini_m0 | 0 | 0 |
| capablerobot_usbhub | 0 | 0 |
| catwan_usbstick | 0 | 0 |
| circuitplayground_express | 332 | 16 |
| circuitplayground_express_4h | 3 | 0 |
| circuitplayground_express_crickit | 7 | 0 |
| circuitplayground_express_digikey_pycon2019 | 2 | 0 |
| electronut_labs_blip | 3 | 2 |
| electronut_labs_papyr | 1 | 0 |
| escornabot_makech | 0 | 0 |
| feather_m0_adalogger | 19 | 7 |
| feather_m0_basic | 23 | 6 |
| feather_m0_express | 55 | 6 |
| feather_m0_express_crickit | 3 | 0 |
| feather_m0_rfm69 | 2 | 0 |
| feather_m0_rfm9x | 28 | 0 |
| feather_m4_express | 75 | 12 |
| feather_nrf52840_express | 23 | 4 |
| feather_radiofruit_zigbee | 0 | 0 |
| gemma_m0 | 56 | 2 |
| gemma_m0_pycon2018 | 3 | 0 |
| grandcentral_m4_express | 19 | 6 |
| hallowing_m0_express | 19 | 1 |
| itsybitsy_m0_express | 22 | 4 |
| itsybitsy_m4_express | 46 | 10 |
| kicksat-sprite | 0 | 0 |
| makerdiary_nrf52840_mdk | 7 | 3 |
| makerdiary_nrf52840_mdk_usb_dongle | 8 | 3 |
| meowmeow | 0 | 0 |
| metro_m0_express | 46 | 6 |
| metro_m4_airlift_lite | 10 | 1 |
| metro_m4_express | 44 | 6 |
| mini_sam_m4 | 0 | 0 |
| particle_argon | 4 | 1 |
| particle_boron | 0 | 0 |
| particle_xenon | 1 | 2 |
| pca10056 | 7 | 5 |
| pca10059 | 12 | 5 |
| pewpew10 | 2 | 0 |
| pewpew13 | 0 | 0 |
| pirkey_m0 | 0 | 0 |
| pybadge | 45 | 8 |
| pybadge_airlift | - | 1 |
| pygamer | 179 | 20 |
| pygamer_advance | - | 14 |
| pyportal | 157 | 30 |
| robohatmm1 | 1 | 0 |
| sam32 | 2 | 0 |
| sparkfun_lumidrive | 0 | 0 |
| sparkfun_nrf52840_mini | 1 | 3 |
| sparkfun_redboard_turbo | 1 | 0 |
| sparkfun_samd21_dev | 0 | 0 |
| sparkfun_samd21_mini | 1 | 0 |
| trellis_m4_express | 53 | 3 |
| trinket_m0 | 132 | 10 |
| uchip | 0 | 0 |
| ugame10 | 3 | 1 |
| ----------------------------------------------|--------|---------------|
| Total | 1471 | 204 |
| ----------------------------------------------|--------|---------------|
Download stats by language:
| Board | 4.0.2 | 4.1.0-beta.1 |
| -----------------|--------|---------------|
| ID | 2 | 0 |
| de_DE | 14 | 2 |
| en_US | 1378 | 173 |
| en_x_pirate | 16 | 22 |
| es | 15 | 2 |
| fil | 0 | 0 |
| fr | 38 | 3 |
| it_IT | 4 | 2 |
| pl | 1 | 0 |
| pt_BR | 2 | 0 |
| zh_Latn_pinyin | 1 | 0 |
| -----------------|--------|---------------|
| Total | 1471 | 204 |
| -----------------|--------|---------------|
### 9:15 Libraries
* 12 pull requests merged
* 8 authors - dastels, kattni, tgikal, caternuson, makermelissa, deshipu, jerryneedell, brentru
* 5 reviewers - ladyada, caternuson, kattni, tannewt, brentru
* 30 open pull requests
* https://github.com/adafruit/Adafruit_CircuitPython_SK9822/pull/2
* https://github.com/adafruit/Adafruit_CircuitPython_WS2801/pull/4
* https://github.com/adafruit/Adafruit_CircuitPython_GFX/pull/6
* https://github.com/adafruit/Adafruit_CircuitPython_Debouncer/pull/8
* https://github.com/adafruit/Adafruit_CircuitPython_BitbangIO/pull/1
* https://github.com/adafruit/Adafruit_CircuitPython_TLC59711/pull/5
* https://github.com/adafruit/Adafruit_CircuitPython_NRF24L01/pull/1
* https://github.com/adafruit/Adafruit_CircuitPython_MAX31865/pull/9
* https://github.com/adafruit/Adafruit_CircuitPython_Fingerprint/pull/11
* https://github.com/adafruit/Adafruit_CircuitPython_framebuf/pull/14
* https://github.com/adafruit/Adafruit_CircuitPython_Hue/pull/6
* https://github.com/adafruit/Adafruit_CircuitPython_MIDI/pull/13
* https://github.com/adafruit/Adafruit_CircuitPython_AdafruitIO/pull/21
* https://github.com/adafruit/Adafruit_CircuitPython_AdafruitIO/pull/20
* https://github.com/adafruit/Adafruit_CircuitPython_SimpleIO/pull/43
* https://github.com/adafruit/Adafruit_CircuitPython_SimpleIO/pull/41
* https://github.com/adafruit/Adafruit_CircuitPython_LSM303/pull/11
* https://github.com/adafruit/Adafruit_CircuitPython_DotStar/pull/36
* https://github.com/adafruit/Adafruit_CircuitPython_DotStar/pull/35
* https://github.com/adafruit/Adafruit_CircuitPython_Bitmap_Font/pull/6
* https://github.com/adafruit/Adafruit_CircuitPython_BNO055/pull/30
* https://github.com/adafruit/Adafruit_CircuitPython_PyPortal/pull/39
* https://github.com/adafruit/Adafruit_CircuitPython_PyPortal/pull/34
* https://github.com/adafruit/Adafruit_CircuitPython_PyPortal/pull/20
* https://github.com/adafruit/Adafruit_CircuitPython_SSD1306/pull/26
* https://github.com/adafruit/Adafruit_CircuitPython_Pypixelbuf/pull/1
* https://github.com/adafruit/Adafruit_CircuitPython_CircuitPlayground/pull/57
* https://github.com/adafruit/Adafruit_CircuitPython_CircuitPlayground/pull/51
* https://github.com/adafruit/Adafruit_CircuitPython_ESP32SPI/pull/45
* https://github.com/adafruit/Adafruit_CircuitPython_ESP32SPI/pull/29
* 6 closed issues by 5 people, 3 opened by 3 people
* 103 open issues
* https://circuitpython.org/libraries/contributing
Library updates in the last seven days:
**New Libraries**
* [Adafruit_CircuitPython_PyBadger](https://github.com/adafruit/Adafruit_CircuitPython_PyBadger)
**Updated Libraries**
* [Adafruit_CircuitPython_RA8875](https://github.com/adafruit/Adafruit_CircuitPython_RA8875)
* [Adafruit_CircuitPython_PN532](https://github.com/adafruit/Adafruit_CircuitPython_PN532)
* [Adafruit_CircuitPython_CursorControl](https://github.com/adafruit/Adafruit_CircuitPython_CursorControl)
## 12:00 Hug reports
16:43 @brentru
* Adam.io for assistance with the MQTT spec this past week
* @dastels for CursorControl feedback and PRs
@charlesburnaford (lurking)
17:38 @dakotah.redstone (lurking)
* Dogpile group hug for the whole community
17:07 @danh
* @rce106 for SAMD51 UART pad fixes
@gpro1 (lurking)
17:48 @jerryn
* Group hug
12:56 @kattni
* @dcbriccetti for a Learn guide code update
* @Roy for continuing to help with my keynote
* @siddacious for talking through some things regarding my keynote
@kingernorth (lurking)
@ladyada
14:17 @MakerMelissa
* @hulkco for getting another display working with displayio
* Group Hug
14:37 @siddacious
* Group hug!
15:02 @sommersoft (lurking, maybe)
* Group Hug
15:10 @tannewt
* Carl0s for taking time out to work with me on RGB LED status.
* Galen for brain power towards touch on SAMD51.
* Jandjstudios for the datum board support.
* Ben Holt for simpleio fix.
* @dcbriccetti for sample code fixes
* @rce1086 for UART TX fix
@tavish (lurking)
* a group hug from me too
16:25 @tg-techie
* Community hug for keeping it a great and open place
## 18:09 Status Updates
30:43 @brentru
* Finishing up MiniMQTT this week
* Lots of features which will make the IOT-CircuitPython folks excited. Some of them may be familiar if you’ve used the eclipse foundation’s Paho-MQTT
* Unsubscribe, methods for handling subscribing/publishing to multiple topics, user-definable acknowledgement handlers (i.e: on_disconnect, on_subscribe), network-interface-agnostic api (ESP32SPI, ethernet and more in the future), multiple logging levels, etc.
* Aiming to PR by Wed.
* After release - I’m planning on adding MQTT classes within CircuitPython_AdafruitIO and CircuitPython_AzureIOT.
* Taking a short vacation at the end of this week
@charlesburnaford (lurking)
32:30 @dakotah.redstone (lurking)
* received/assembled Adabox12 pygamer haven't done any programming yet
* received/haven't setup Pi4 so more distractions :)
* some small progress on project trashfishlikething
* not holding the forces of chaos at bay... hope to change that ;)
32:55 @danh
* Getting BLE Central UART Service to work. Needed to do BLE descriptor discovery.
@gpro1 (lurking)
34:13 @jerryn
* Last week
* Retired from “day job” :-)
* Started 30 years of deferred home maintenance!
* Next week
* Continue
* Should be more CircuitPython time “real soon now”
19:13 @kattni
* Last week:
* Fix terminalio.FONT issue in PyBadger
* show_foo naming for PyBadger functions
* update examples with naming updates PyBadger
* Verified PyBadbger example is good
* PyBadger guide
* Send info about potential bug displaying label over bitmap
* This week and beyond:
* Finish documenting PyBadger
* Clarify fonts are strings
* Bundle PyBadger
* Blog up PyBadger guide release
* Forum support
* Multiple PCA9865 with ServoKit on RPi
* Reply to CharLCD memory issue
* Add PYOA to RTD
* Add turtle to RTD
* Outline: Guide for adding a board to CircuitPython
* Finish documenting Debug_I2C
* Finish documenting testing Debug_SPI
* Add e-ink shield to downloads page in e-ink breakout guide: https://learn.adafruit.com/adafruit-eink-display-breakouts/downloads
* Finish blog posts
* Finish processing photos
* Add FeatherWing header pinouts to PyBadge/PyGamer guides
* MPL3115A2/MPL115A2 combination product guide
* Sort out community submitted CircuitPython library to get it into the community bundle
* Recording embedded.fm on Saturday
@kingernorth (lurking)
@ladyada
23:32 @MakerMelissa
* Last Week:
* Tested Kattni’s PyBadger code
* Worked on PyCalculator for PyPortal guide
* Fixed PiTFT Easy Installer on Raspbian Buster
* Fixed and updated RA8875 CircuitPython Library
* This Week:
* Finish testing FreqShow PR on Raspberry Pi 4
* Finish up PyCalculator Guide
* Look into some Raspberry Pi Script Improvements
24:42 @siddacious
* Last week OLED Friend rev b testing and OLED Bonnet, Vacation
* VCNL4040 Rev B testing and guide
* New module test board tests
25:49 @sommersoft (lurking, maybe)
* Last Week:
* Continued workcation, which ends today. :(
* Dynamic RTD module support matrix:
* Had to change a couple things to make it Python3.5 compatible for Travis.
* Now getting a Travis failure on 'sphinx-build', which I'm thinking is bash command related (';' vs '&&')
* This Week:
* Finish support matrix
* Back to RosiePi work
26:31 @tannewt
* Finishing up displayio work to add other color depth support. First OLEDs and Sharp and EINK later. Decided to extend Palette to store original 24-bit color and store grayscale and RGB565 internally.
* Hacked on touch on SAMD51 this weekend with a friend but ran into some road blocks.
* This week’s challenge is adding bit packing to pixel computation that is both column oriented (like OLEDs) and row oriented (like sharp).
* Recording embedded.fm on Saturday.
29:20 @tg-techie
* Out of state for a while so not much last week
* Have been porting GUI stuff to displayio and reworking some stuff
* Should make it clearer with decorators to avoid passing extraneous
* Will look at cursor control to help with UI stuff
## 35:12 In The Weeds
35:31 @danh
* Should instructions for building CircuitPython be in a README in the source repo, or should it mostly be in https://learn.adafruit.com/building-circuitpython ? See https://github.com/adafruit/circuitpython/pull/1986 for some background.
* @sommersoft: from an ease-of-maintenance perspective, it'd be easier to point to the learn guide in README; only one set of instructions to maintain.
* Keep the core “known good”/happy path instructions and longer and more detailed instructions can be in the README
* Learn guide will include a clear set of what tools are needed
* Dan will try to figure out how to get them to co-exist
46:00 Tg-techie - AST and/or compile built-in
* CPython uses ASTs, CP doesn’t have `compile` exposed, the tools are available under the hood
* Scott says it’s possible there is no good boundary between parsing and VM, likely there is no AST generated
* Sommersoft pointed out that `eval` may be usable for similar tasks though it runs it immediately
## 50:09 Wrap-Up